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  • 11:14, 7 May 2020Azurmalachite (hist)[237 bytes]Webref (talk | contribs) (Created page with "An intimate mixture or intergrowth of azurite and malachite, commonly massive and concentrically banded; used as an ornamental stone. Syn: azure malachite; azurite malachite....")
  • 11:14, 7 May 2020Azurlite (hist)[145 bytes]Webref (talk | contribs) (Created page with "Chalcedony colored blue by chrysocolla; and used as a gemstone. Syn: azurchalcedony <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:14, 7 May 2020Azurite malachite (hist)[80 bytes]Webref (talk | contribs) (Created page with "See: azurmalachite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:13, 7 May 2020Azurite (hist)[471 bytes]Webref (talk | contribs) (Created page with "# A monoclinic mineral, 2[Cu3 (OH)2 (CO3 )2 ]; forms vitreous azure crystals; a supergene mineral in oxidized parts of copper deposits associated with malachite; an ore of cop...")
  • 11:13, 7 May 2020Azure stone (hist)[161 bytes]Webref (talk | contribs) (Created page with "A term applied to lapis lazuli (lazurite) and to other blue minerals such as lazulite and azurite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:12, 7 May 2020Azure spar (hist)[86 bytes]Webref (talk | contribs) (Created page with "See: azurite; lazulite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:12, 7 May 2020Azure quartz (hist)[82 bytes]Webref (talk | contribs) (Created page with "See: sapphire quartz <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:12, 7 May 2020Azure malachite (hist)[80 bytes]Webref (talk | contribs) (Created page with "See: azurmalachite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:12, 7 May 2020Azure (hist)[91 bytes]Webref (talk | contribs) (Created page with "See: lapis lazuli; lazurite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:11, 7 May 2020Azurchalcedony (hist)[75 bytes]Webref (talk | contribs) (Created page with "See: azurlite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:11, 7 May 2020Azulinhas (hist)[119 bytes]Webref (talk | contribs) (Created page with "Small cloudy sapphires occuring with diamonds in Brazil. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:11, 7 May 2020Aztec stone (hist)[132 bytes]Webref (talk | contribs) (Created page with "# A greenish variety of smithsonite. # A green variety of turquoise. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:11, 7 May 2020Azorite (hist)[102 bytes]Webref (talk | contribs) (Created page with "A variety of altered zircon. See: zircon <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:10, 7 May 2020Axstone (hist)[113 bytes]Webref (talk | contribs) (Created page with "A variety of nephrite jade. Also spelled axestone. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:09, 7 May 2020Axotomous (hist)[154 bytes]Webref (talk | contribs) (Created page with "In crystallography, having cleavage perpendicular to an axis; said of minerals. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:09, 7 May 2020Axonometric projection (hist)[398 bytes]Webref (talk | contribs) (Created page with "A method of projection which has the advantage of containing a true plan, and can therefore be set up from drawings already in existence for other purposes. The plan is turned...")
  • 11:09, 7 May 2020Axis of symmetry (hist)[374 bytes]Webref (talk | contribs) (Created page with "An imaginary line in a crystal, crystal structure, or crystal lattice, about which it may be rotated to an identical configuration. If identity occurs once during a complete r...")
  • 11:09, 7 May 2020Axis of acoustic symmetry (hist)[393 bytes]Webref (talk | contribs) (Created page with "For many transducers, the three-dimensional directivity is such that it may be represented by the surface generated by rotating a two-dimensional directivity pattern about the...")
  • 12:00, 6 May 2020Axiolite (hist)[256 bytes]Webref (talk | contribs) (Created page with "A term proposed by Zirkel for a variety of elongated spherulite in which there is an aggregation of minute acicular crystals arranged at right angles to a central axis rather...")
  • 12:00, 6 May 2020Axinite (hist)[249 bytes]Webref (talk | contribs) (Created page with "# The mineral group ferroaxinite, magnesioaxinite, manganaxinite, and tinzenite. # Triclinic borosilicates with the formula A3 Al2 BSi4O15 (OH) where A = (Ca,Fe,Mg,Mn). Syn:...")
  • 11:59, 6 May 2020Axial-plane separation (hist)[189 bytes]Webref (talk | contribs) (Created page with "The distance between axial surfaces of adjacent antiforms and synforms where the folds occur in the same layer or surface. AGI <br/>Source: Dictionary of Mining, Mineral, and...")
  • 11:59, 6 May 2020Axial-plane foliation (hist)[188 bytes]Webref (talk | contribs) (Created page with "Foliation that developed parallel to the axial plane of a fold and perpendicular to the principal deformational pressure. AGI <br/>Source: Dictionary of Mining, Mineral, and...")
  • 11:59, 6 May 2020Axial-plane folding (hist)[263 bytes]Webref (talk | contribs) (Created page with "Large-scale secondary folding of preexisting folds, in response to stresses that varied considerably from those that caused the original folding. The axial planes of the origi...")
  • 11:59, 6 May 2020Axial-plane cleavage (hist)[434 bytes]Webref (talk | contribs) (Created page with "Cleavage that is closely related to the axial planes of folds in the rock, either being rigidly parallel to the axes, or diverging slightly on each flank (fan cleavage). Most...")
  • 11:58, 6 May 2020Axial-flow fan (hist)[873 bytes]Webref (talk | contribs) (Created page with "# A type of mine fan in which the mine air enters along the axis parallel to the shaft and continues in this direction to the point of exhaust. The axial-flow fan may have fix...")
  • 11:58, 6 May 2020Axial-flow compressor (hist)[188 bytes]Webref (talk | contribs) (Created page with "A compressor in which air is compressed in a series of stages as it flows axially through a decreasing tubular area. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and...")
  • 11:58, 6 May 2020Axial trace (hist)[170 bytes]Webref (talk | contribs) (Created page with "The intersection of the axial plane of a fold with the surface of the Earth or any other specified surface. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:58, 6 May 2020Axial stream (hist)[337 bytes]Webref (talk | contribs) (Created page with "# The main stream of an intermontane valley, which flows along the lowest part of the valley and parallel to its long dimension, in contradistinction to the streams that flow...")
  • 11:57, 6 May 2020Axial ratio (hist)[247 bytes]Webref (talk | contribs) (Created page with "The lengths of crystallographic axes defined in terms of their ratios with, by convention, a set at unity where one axis is unique and b set at unity where all three axes are...")
  • 11:57, 6 May 2020Axial priming (hist)[197 bytes]Webref (talk | contribs) (Created page with "A system for priming blast agents in which a core of priming material extends through most or all of the blasting agent charge length. <br/>Source: Dictionary of Mining, Mine...")
  • 11:57, 6 May 2020Axial plane (hist)[740 bytes]Webref (talk | contribs) (Created page with "# A plane through a rock fold that includes the axis and divides the fold as symmetrically as possible. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewo...")
  • 11:56, 6 May 2020Axial line (hist)[71 bytes]Webref (talk | contribs) (Created page with "See: axis <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:56, 6 May 2020Axial flow (hist)[191 bytes]Webref (talk | contribs) (Created page with "In pumping or in ventilation, the use of a propeller or impeller to accelerate the load along the axis of the impeller. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, a...")
  • 11:56, 6 May 2020Axial figure (hist)[854 bytes]Webref (talk | contribs) (Created page with "# The interference figure that is obtained in convergent light when an optic axis of the mineral being observed in thin section or as a fragment coincides with the axis of the...")
  • 11:56, 6 May 2020Axial element (hist)[205 bytes]Webref (talk | contribs) (Created page with "In crystallography, the ratio of a unit distance along a crystallographic axis and the corresponding angle between axes. Syn: lattice parameter <br/>Source: Dictionary of Mini...")
  • 11:55, 6 May 2020Axial compression (hist)[246 bytes]Webref (talk | contribs) (Created page with "In experimental work with cylinders, a compression applied parallel with the cylinder axis. It should be used in an appropriate sense only in the interpretation of deformed ro...")
  • 11:55, 6 May 2020Axial angle (hist)[301 bytes]Webref (talk | contribs) (Created page with "# The acute angle between the two optic axes of a biaxial crystal. Its symbol is 2V. AGI # The axial angle in air (symbol 2E) is the larger angle between the optic axes after...")
  • 11:33, 6 May 2020Axes (hist)[501 bytes]Webref (talk | contribs) (Created page with "# Crystallographic directions through a crystal; used as lines of reference. Hurlbut # Reference coordinates a, b, c, in crystallography, crystallographic axes. # Directions...")
  • 11:30, 6 May 2020AX (hist)[353 bytes]Webref (talk | contribs) (Created page with "Letter name specifying the dimensions of core, core barrels, and casing in the A-size and X-series wireline diamond drilling system having a core diameter of 30.1 mm and a hol...")
  • 11:30, 6 May 2020Awaruite (hist)[126 bytes]Webref (talk | contribs) (Created page with "An isometric mineral, Ni2 Fe to Ni3 Fe . Syn: native nickel-iron <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:29, 6 May 2020AW (hist)[280 bytes]Webref (talk | contribs) (Created page with "Letter name specifying the dimensions of bits, core barrels, and drill rods in the A-size and W-group wireline diamond drilling system having a core diameter of 30.1 mm and a...")
  • 11:29, 6 May 2020Avicennite (hist)[123 bytes]Webref (talk | contribs) (Created page with "An isometric mineral, Tl2 O3 ; black; forms minute crystals. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:29, 6 May 2020Average loading (hist)[199 bytes]Webref (talk | contribs) (Created page with "The average number of tons of a specified material to be carried by a conveyor per hour, based on total operating-shift tonnage. NEMA, 2 <br/>Source: Dictionary of Mining, Mi...")
  • 11:29, 6 May 2020Average clause (hist)[336 bytes]Webref (talk | contribs) (Created page with "Eng. A clause that, in granting leases of minerals (coal, ironstone, and clay in particular), provides that lessees may, during every year of the term, make up any deficiency...")
  • 11:28, 6 May 2020Average assay value (hist)[78 bytes]Webref (talk | contribs) (Created page with "See: assay value <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:28, 6 May 2020Aventurine quartz (hist)[77 bytes]Webref (talk | contribs) (Created page with "See: aventurine <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:28, 6 May 2020Aventurine glass (hist)[321 bytes]Webref (talk | contribs) (Created page with "A glass supersaturated with either iron, chromium, or copper oxide (or a combination of the oxides) that is melted and cooled under controlled conditions to cause the excessiv...")
  • 11:28, 6 May 2020Aventurine feldspar (hist)[272 bytes]Webref (talk | contribs) (Created page with "Orthoclase, albite, or oligoclase that is more or less transparent, with fiery reflections from enclosed flat mineral particles, which are probably hematite or goethite. Sunst...")
  • 11:27, 6 May 2020Aventurine (hist)[781 bytes]Webref (talk | contribs) (Created page with "# A glass containing opaque sparkling particles of foreign material, which is usually copper or chromic oxide. With copper particles, it is called gold aventurine, and with ch...")
  • 11:27, 6 May 2020Aventurescence (hist)[342 bytes]Webref (talk | contribs) (Created page with "# A word used to describe the metallic spangled effect seen, in reflected light, in aventurine and aventurine feldspar. A sort of schiller but more scintillating. # A display...")
  • 11:27, 6 May 2020Avanturine (hist)[96 bytes]Webref (talk | contribs) (Created page with "Alternate spelling of aventurine. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:27, 6 May 2020Avalanche protector (hist)[187 bytes]Webref (talk | contribs) (Created page with "Guardplates that prevent loose material from sliding into contact with the wheels or tracks of a digging machine. Nichols, 1 <br/>Source: Dictionary of Mining, Mineral, and R...")
  • 11:26, 6 May 2020Avalanche (hist)[253 bytes]Webref (talk | contribs) (Created page with "A large mass of snow, ice, soil, or rock, or mixtures of these materials, falling, sliding, or flowing very rapidly under the force of gravity. Velocities may sometimes exceed...")
  • 11:26, 6 May 2020Available silica (hist)[165 bytes]Webref (talk | contribs) (Created page with "The amount of silica present in a flux that is not slagged by impurities in the flux itself. Newton, 1 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:26, 6 May 2020Available relief (hist)[241 bytes]Webref (talk | contribs) (Created page with "# The vertical distance between the altitude of the original surface after uplift and the level at which grade is first attained. AGI # The relief that is available for erosi...")
  • 11:26, 6 May 2020Available power loss (hist)[254 bytes]Webref (talk | contribs) (Created page with "The available power loss of a transducer connecting an energy source and an energy load is the transmission loss measured by the ratio of the source power to the output power...")
  • 11:25, 6 May 2020Available power (hist)[250 bytes]Webref (talk | contribs) (Created page with "The rate at which a given source would deliver energy to a load having an impedance that is the conjugate of the source impedance is designated as the available power of that...")
  • 11:25, 6 May 2020Available lime (hist)[370 bytes]Webref (talk | contribs) (Created page with "# Those constituents of a lime that enter into a desired reaction under the conditions of a specific method or process. ASTM # Represents the total free lime (CaO) content in...")
  • 11:25, 6 May 2020Available energy (hist)[192 bytes]Webref (talk | contribs) (Created page with "That part of the total energy that can be usefully employed. In a perfect engine, that part which is converted to work. Strock, 2 <br/>Source: Dictionary of Mining, Mineral,...")
  • 11:25, 6 May 2020Available alumina (hist)[260 bytes]Webref (talk | contribs) (Created page with "The theoretical amount of extractable aluminum oxide, Al2 O3 , present in a bauxite. The amount of alumina in a bauxite that is present in a form that allows it to be extracte...")
  • 11:24, 6 May 2020Auxiliary ventilation (hist)[547 bytes]Webref (talk | contribs) (Created page with "A method of supplementing the main ventilating current in a mine by using a small fan to draw air from the main current and force it through canvas or metal pipe to some parti...")
  • 11:24, 6 May 2020Auxiliary operations (hist)[248 bytes]Webref (talk | contribs) (Created page with "In metallurgy, diverse operations, such as storing in bins, conveying (by conveyors, feeders, elevators, or pumps), sampling, weighing, reagent feeding, and pulp distribution....")
  • 11:24, 6 May 2020Auxiliary mineral (hist)[259 bytes]Webref (talk | contribs) (Created page with "In Johannsen's classification of igneous rocks, any light-colored, relatively rare mineral, or mineral occurring in small quantities, such as apatite, muscovite, corundum, flu...")
  • 11:24, 6 May 2020Auxiliary fault (hist)[126 bytes]Webref (talk | contribs) (Created page with "A branch fault. A minor fault ending against a major fault. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:23, 6 May 2020Auxiliary cylinder (hist)[392 bytes]Webref (talk | contribs) (Created page with "A cylinder, operated by compressed air, that is used to assist the main engine of a compressed-air shaker conveyor, esp. where the conveyor cannot develop a sufficient amount...")
  • 11:23, 6 May 2020Auxiliary anode (hist)[208 bytes]Webref (talk | contribs) (Created page with "A supplementary anode placed in a position to raise the current density on a certain area of the cathode to get better plate distribution. ASM, 1 <br/>Source: Dictionary of M...")
  • 11:23, 6 May 2020Auxiliary (hist)[317 bytes]Webref (talk | contribs) (Created page with "# Tools or other equipment, such as a pump, drill rods, casing, core barrel, bits, water swivel, safety clamp, etc., required for use with a drill machine to carry on specific...")
  • 11:22, 6 May 2020Autunite (hist)[889 bytes]Webref (talk | contribs) (Created page with "# Ca(UO2)2(PO4)2 * 10-12H2O <br/>See meta-autunite. <br/>U = 45.4 percent to 48.2 percent. <br/>Color: Yellow. Common secondary mineral. <br/>Synonyms: calciumphosphoruranit,...")
  • 11:21, 6 May 2020Autrometer (hist)[613 bytes]Webref (talk | contribs) (Created page with "# An automatic multielement-indexing X-ray spectrograph, capable of the qualitative and quantitative determinations of as many as 24 elements in a single sample. Choice of the...")
  • 11:20, 6 May 2020Autotroph (hist)[184 bytes]Webref (talk | contribs) (Created page with "Organism capable of growth exclusively at the expense of inorganic nutrients. See also: chemolithotroph; photolithotroph. <br/>Source: Dictionary of Mining, Mineral, and Rela...")
  • 11:20, 6 May 2020Autostoper (hist)[220 bytes]Webref (talk | contribs) (Created page with "A stoper or light compressed-air rock drill, mounted on an air-leg support that not only supports the drill but also exerts pressure on the drill bit. Nelson <br/>Source: Dic...")
  • 11:19, 6 May 2020Autospray (hist)[486 bytes]Webref (talk | contribs) (Created page with "A device for controlling dust carried by loaded conveyors. A liquid medium is sprayed on the conveyor load only when moving and not when stationary, or when the belt is runnin...")
  • 11:19, 6 May 2020Autopneumatolysis (hist)[233 bytes]Webref (talk | contribs) (Created page with "Autometamorphism involving the crystallization of minerals or the alteration of a rock by gaseous emanations originating in the magma or rock itself. CF: autometasomatism <br...")
  • 11:19, 6 May 2020Automorphic-granular (hist)[79 bytes]Webref (talk | contribs) (Created page with "See: automorphic <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:19, 6 May 2020Automorphic (hist)[439 bytes]Webref (talk | contribs) (Created page with "# Said of the holocrystalline texture of an igneous or metamorphic rock, characterized by crystals bounded by their own rational faces. Also said of a rock with such a texture...")
  • 11:19, 6 May 2020Automolite (hist)[120 bytes]Webref (talk | contribs) (Created page with "A dark-green to nearly black variety of gahnite. Schaller <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:18, 6 May 2020Autometasomatism (hist)[271 bytes]Webref (talk | contribs) (Created page with "Alteration of a recently crystallized igneous rock by its own last water-rich liquid fraction, trapped within the rock, generally by an impermeable chilled border. CF: autopne...")
  • 11:18, 6 May 2020Autometamorphism (hist)[450 bytes]Webref (talk | contribs) (Created page with "# A process of recrystallization of an igneous rock under conditions of falling temperature, attributed to the action of its own volatiles, e.g., serpentinization of peridotit...")
  • 11:18, 6 May 2020Automatic winding (hist)[475 bytes]Webref (talk | contribs) (Created page with "This term includes at least three different systems: (1) fully automatic winding in which no driver, banksman, or onsetter is employed; (2) pushbutton automatic winding, simil...")
  • 11:17, 6 May 2020Automatic sprinkler (hist)[310 bytes]Webref (talk | contribs) (Created page with "A water sprinkling device closed by a metallic alloy that melts at a low temperature. In case of fire the alloy melts, releasing a water spray. These devices are used in wood-...")
  • 11:17, 6 May 2020Automatic sampling (hist)[168 bytes]Webref (talk | contribs) (Created page with "Automatic removal of samples at timed intervals from a passing stream of ore, pulp, or solution. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:17, 6 May 2020Automatic sampler (hist)[161 bytes]Webref (talk | contribs) (Created page with "An instrument designed to take samples of mine gases or water at predetermined times or intervals. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:17, 6 May 2020Automatic recorder (hist)[307 bytes]Webref (talk | contribs) (Created page with "Appliance for recording the working time of machines such as cutter loaders, conveyors, etc. A vibrating type, fitted on the equipment itself, marks on a chart a straight line...")
  • 11:17, 6 May 2020Automatic reclosing relays (hist)[685 bytes]Webref (talk | contribs) (Created page with "Relays used to automatically reclose electrically operated circuit breakers. They limit the duration of power failures in many instances where faults clear themselves quickly....")
  • 11:16, 6 May 2020Automatic pumping (hist)[156 bytes]Webref (talk | contribs) (Created page with "An arrangement to stop and start a mine pump automatically by means of a float switch. Nelson <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:16, 6 May 2020Automatic pump control (hist)[238 bytes]Webref (talk | contribs) (Created page with "The starting and stopping of a pump by a mechanism actuated by the level of water in the suction well or pump, or by the level or pressure of water in a discharge tank. BS, 10...")
  • 11:16, 6 May 2020Automatic heat-treating machine (hist)[96 bytes]Webref (talk | contribs) (Created page with "See: Gilman heat-treating machine <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:16, 6 May 2020Automatic feed sampler (hist)[142 bytes]Webref (talk | contribs) (Created page with "An automatic, timed sampling device used at mill feeds and other plants. Nelson <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:16, 6 May 2020Automatic feed (hist)[357 bytes]Webref (talk | contribs) (Created page with "# A hydraulic-control system of valves that when once set and without the manual assistance of a drill runner will reduce or increase feed pressure applied to a drill stem as...")
  • 11:15, 6 May 2020Automatic doors (hist)[183 bytes]Webref (talk | contribs) (Created page with "Air doors on a haulage road that are automatically operated by a passing vehicle or train of tubs, or other means. BS, 8 <br/>Source: Dictionary of Mining, Mineral, and Relat...")
  • 11:15, 6 May 2020Automatic door (hist)[508 bytes]Webref (talk | contribs) (Created page with "# A mine door operated by pressure of the locomotive wheels on a switch along the rails approaching the doors, which closes the door automatically after the trip has passed. T...")
  • 11:15, 6 May 2020Automatic dam (hist)[74 bytes]Webref (talk | contribs) (Created page with "See: boomer <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:14, 6 May 2020Automatic cyclic winding (hist)[363 bytes]Webref (talk | contribs) (Created page with "A system of automatic winding in which the complete installation operates without human aid and winding continues automatically as long as coal is available at the shaft botto...")
  • 11:14, 6 May 2020Automatic coupling (hist)[133 bytes]Webref (talk | contribs) (Created page with "A device that automatically couples cars when they bump together. Zern <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:14, 6 May 2020Automatic clutch (hist)[193 bytes]Webref (talk | contribs) (Created page with "A clutch whose engagement is controlled by centrifugal force, vacuum, or other power without attention by the operator. Nichols, 1 <br/>Source: Dictionary of Mining, Mineral,...")
  • 11:13, 6 May 2020Automatic clip (hist)[277 bytes]Webref (talk | contribs) (Created page with "An appliance for attaching and detaching mine trams or cars without manual effort. It is generally attached at inby clipping stations and detached at the shaft bottom. See als...")
  • 11:13, 6 May 2020Automatic belt takeup (hist)[188 bytes]Webref (talk | contribs) (Created page with "A device used with certain types of belt conveyors for the taking up or storage of belt during reversible operation. Jones, 1 <br/>Source: Dictionary of Mining, Mineral, and...")
  • 11:13, 6 May 2020Automatic ash analysis (hist)[401 bytes]Webref (talk | contribs) (Created page with "Analysis in which the coal sample passes first to a conditioning unit, which dries and grinds it, then to an X-ray analysis unit. The analysis is based on the difference in th...")
  • 11:13, 6 May 2020Autolith (hist)[301 bytes]Webref (talk | contribs) (Created page with "# An inclusion in an igneous rock to which it is genetically related. CF: xenolith # In a granitoid rock, an accumulation of iron-magnesium minerals of uncertain origin. It ma...")
  • 11:12, 6 May 2020Autointrusion (hist)[388 bytes]Webref (talk | contribs) (Created page with "# A process wherein the residual liquid of a differentiating magma is injected into rifts formed in the crystallized fraction at a late stage by deformation of unspecified ori...")
  • 11:12, 6 May 2020Autoinjection (hist)[81 bytes]Webref (talk | contribs) (Created page with "See: autointrusion <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:12, 6 May 2020Autohydration (hist)[207 bytes]Webref (talk | contribs) (Created page with "The development of new minerals in an igneous rock by the action of its own magmatic water on already existing magmatic minerals. Schieferdecker <br/>Source: Dictionary of Mi...")
  • 11:12, 6 May 2020Autogenous roasting (hist)[179 bytes]Webref (talk | contribs) (Created page with "Roasting in which the heat generated by oxidation of the sulfides is sufficient to propagate the reaction. Newton, 2 <br/>Source: Dictionary of Mining, Mineral, and Related T...")
  • 11:11, 6 May 2020Autogenous grinding (hist)[195 bytes]Webref (talk | contribs) (Created page with "The secondary grinding of coal or ore by tumbling in a revolving cylinder with no balls or bars taking part in the operation. Nelson <br/>Source: Dictionary of Mining, Minera...")
  • 11:11, 6 May 2020Autogenous (hist)[271 bytes]Webref (talk | contribs) (Created page with "# In the dense-media separation process, fluid media partly composed of a mineral species selected from material being treated. Pryor, 4 # Selectively sized lumps of material...")
  • 17:27, 5 May 2020Autoclastic (hist)[347 bytes]Webref (talk | contribs) (Created page with "Having a broken or brecciated structure, formed in the place where it is found as a result of crushing, dynamic metamorphism, or other mechanical processes; e.g., a fault brec...")
  • 17:27, 5 May 2020Autochthony (hist)[286 bytes]Webref (talk | contribs) (Created page with "An accumulation of plant remains in the place of their growth. The term itself can be distinguished between autochthonous elements of growth (euautochthony) and autochthonous...")
  • 17:26, 5 May 2020Autochthonous peat (hist)[209 bytes]Webref (talk | contribs) (Created page with "Peat that formed in place by the gradual accumulation of plant remains in water. It is subdivided into low-moor peat and high-moor peat. Tomkeieff <br/>Source: Dictionary of...")
  • 17:26, 5 May 2020Autochthonous coal (hist)[292 bytes]Webref (talk | contribs) (Created page with "Coal believed to have been formed from accumulations of plant debris at the place where the plants grew. Two modes of origin are distinguished: terrestrial and aquatic. Also c...")
  • 17:26, 5 May 2020Autochthonous (hist)[248 bytes]Webref (talk | contribs) (Created page with "Formed or produced in the place where now found. Applied to a rock the dominant constituents of which have been formed in situ; e.g., rock salt. CF: allochthonous; authigenic....")
  • 17:26, 5 May 2020Autochthon (hist)[319 bytes]Webref (talk | contribs) (Created page with "A body of rocks that remains at its site of origin, where it is rooted to its basement. Although not moved from their original site, autochthonous rocks may be mildly to consi...")
  • 17:25, 5 May 2020Authorized person (hist)[454 bytes]Webref (talk | contribs) (Created page with "An authorized person is either one appointed or permitted by the official designated by State mining laws to be in charge of the operation of the mine or one appointed to perf...")
  • 17:25, 5 May 2020Authorized fuels (hist)[342 bytes]Webref (talk | contribs) (Created page with "In Great Britain, under the regulations made by the Minister (Smoke Control Areas-Authorized Fuels-Regulations, 1956), authorized fuels include coke of all kinds, anthracite,...")
  • 17:25, 5 May 2020Authigenic mineral (hist)[77 bytes]Webref (talk | contribs) (Created page with "See: authigene <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:25, 5 May 2020Authigenic (hist)[538 bytes]Webref (talk | contribs) (Created page with "Formed or generated in place; specif. said of rock constituents and minerals that have not been transported or that crystallized locally at the spot where they are now found,...")
  • 17:25, 5 May 2020Authigenetic (hist)[78 bytes]Webref (talk | contribs) (Created page with "See: authigenic <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:24, 5 May 2020Authigenesis (hist)[553 bytes]Webref (talk | contribs) (Created page with "# The process by which new minerals form in place within a rock during or after its formation, as by replacement or recrystallization, or by secondary enlargement of quartz ov...")
  • 17:24, 5 May 2020Authigene (hist)[290 bytes]Webref (talk | contribs) (Created page with "A mineral or rock constituent that was formed in place; e.g., a mineral of an igneous rock; the cement of a sedimentary rock if deposited directly from solution; or a mineral...")
  • 17:24, 5 May 2020Australian cinnabar (hist)[87 bytes]Webref (talk | contribs) (Created page with "A variety of chrome red. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:24, 5 May 2020Australian bentonite (hist)[156 bytes]Webref (talk | contribs) (Created page with "Trade name for highly plastic clays from Trida, N.S.W. New South Wales <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:23, 5 May 2020Austinite (hist)[176 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, CaZn(AsO4 )(OH); adelite group; forms a series with conichalcite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:23, 5 May 2020Austenitizing (hist)[251 bytes]Webref (talk | contribs) (Created page with "Forming austenite by heating a ferrous alloy into the transformation range (partial austenitizing) or above the transformation range (complete austenitizing). ASM, 1 <br/>Sou...")
  • 17:23, 5 May 2020Austenitic stainless steel (hist)[261 bytes]Webref (talk | contribs) (Created page with "The so-called 18-8 grades contain from 16% to 26% chromium and 6% to 20% nickel, are not hardenable by heat treatment, and are nonmagnetic in the annealed condition. Henderson...")
  • 17:23, 5 May 2020Austenite (hist)[264 bytes]Webref (talk | contribs) (Created page with "A solid solution of one or more elements in face-centered cubic iron. Unless otherwise designated (such as nickel austenite), the solute is generally assumed to be carbon. ASM...")
  • 17:22, 5 May 2020Austempering (hist)[394 bytes]Webref (talk | contribs) (Created page with "The isothermal transformation of a ferrous alloy at a temperature below that of pearlite formation and above that of martensite formation. Austempering is the isothermal trans...")
  • 17:22, 5 May 2020Aurous (hist)[177 bytes]Webref (talk | contribs) (Created page with "Of, pertaining to, or containing gold in the univalent state; e.g., aurous chloride (AuCl). <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:22, 5 May 2020Aurostibite (hist)[129 bytes]Webref (talk | contribs) (Created page with "An isometric mineral, AuSb2 ; pyrite group. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:22, 5 May 2020Aurosmirid (hist)[158 bytes]Webref (talk | contribs) (Created page with "A silver-white crystal solution of gold and osmium in isometric iridium. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:22, 5 May 2020Aurobismuthinite (hist)[300 bytes]Webref (talk | contribs) (Created page with "A doubtful sulfide containing bismuth, gold, and silver; lead-gray in color. It may be a mixture of (Bi,Au,Ag2 )S , or possibly of a gold-silver alloy, and bismuthinite, Bi2 S...")
  • 17:21, 5 May 2020Auriferous pyrite (hist)[171 bytes]Webref (talk | contribs) (Created page with "Iron sulfide, in the form of pyrite, containing gold, probably in solid solution. CTD <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:21, 5 May 2020Auriferous (hist)[167 bytes]Webref (talk | contribs) (Created page with "Refers to a substance that contains gold, esp. gold-bearing mineral deposits. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:21, 5 May 2020Auricupride (hist)[151 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, Cu3 Au . Syn: gold cupride; cuproauride. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:21, 5 May 2020Aurichalcite (hist)[244 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, 4[(Zn,Cu)5 (CO3 )2 (OH)6] ; forms soft scaly greenish-blue crusts in oxidized zones of copper-zinc ore deposits; a guide to zinc ore. <br/>Source: Di...")
  • 17:20, 5 May 2020Auri-argentiferous (hist)[150 bytes]Webref (talk | contribs) (Created page with "Applied to minerals containing both gold and silver. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:20, 5 May 2020Aureole (hist)[943 bytes]Webref (talk | contribs) (Created page with "# A zone in which contact metamorphism has taken place. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall # A circular or cre...")
  • 17:20, 5 May 2020Auralite (hist)[138 bytes]Webref (talk | contribs) (Created page with "# Altered iolite. Standard, 2 # Altered cordierite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:20, 5 May 2020Augite syenite (hist)[141 bytes]Webref (talk | contribs) (Created page with "A syenite in which augite is a prominent mafic mineral. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:19, 5 May 2020Augite diorite (hist)[141 bytes]Webref (talk | contribs) (Created page with "A diorite in which augite is a prominent mafic mineral. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:19, 5 May 2020Augite bronzite (hist)[162 bytes]Webref (talk | contribs) (Created page with "An obsolete term for a pyroxene between enstatite and augite in composition. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:19, 5 May 2020Augite (hist)[528 bytes]Webref (talk | contribs) (Created page with "# A rock-forming ferromagnesian silicate mineral built around single chains of silicon-oxygen tetrahedra. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Engle...")
  • 17:19, 5 May 2020Auger mining (hist)[754 bytes]Webref (talk | contribs) (Created page with "A mining method often used by strip-mine operators where the overburden is too thick to be removed economically. Large-diameter, spaced holes are drilled up to 200 ft (61 m) i...")
  • 17:18, 5 May 2020Auger hole (hist)[135 bytes]Webref (talk | contribs) (Created page with "A hole drilled with power-driven augers. Williams <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:18, 5 May 2020Auger head (hist)[103 bytes]Webref (talk | contribs) (Created page with "See: auger mining <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:18, 5 May 2020Auger boring (hist)[160 bytes]Webref (talk | contribs) (Created page with "The hole and/or the process of drilling a hole using auger equipment. Long <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:18, 5 May 2020Auger bits (hist)[239 bytes]Webref (talk | contribs) (Created page with "Hard steel or tungsten-carbide-tipped cutting teeth used in an auger run on a torque bar or in an auger-drill head run on a continuous-flight auger. Long <br/>Source: Diction...")
  • 17:17, 5 May 2020Auger (hist)[931 bytes]Webref (talk | contribs) (Created page with "# A drill for seismic shotholes or geophone holes modeled after the conventional carpenter's screw auger. Hence, any seismic shothole drilling device in which the cuttings are...")
  • 17:17, 5 May 2020Augen structure (hist)[436 bytes]Webref (talk | contribs) (Created page with "In some gneissic and schistose metamorphic rocks, a structure consisting of minerals like feldspar, quartz, or garnet that have been squeezed into elliptical or lens-shaped fo...")
  • 17:17, 5 May 2020Augen schist (hist)[255 bytes]Webref (talk | contribs) (Created page with "A metamorphic rock characterized by recrystallized minerals occurring as augen or lenticles parallel to and alternating with schistose streaks. See also: mylonite gneiss <br/...")
  • 17:17, 5 May 2020Augen gneiss (hist)[160 bytes]Webref (talk | contribs) (Created page with "A general term for a gneissic rock containing augen. See also: cataclasite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:16, 5 May 2020Augen (hist)[326 bytes]Webref (talk | contribs) (Created page with "In foliate metamorphic rocks such as schists and gneisses, large lenticular mineral grains or mineral aggregates having the shape of an eye in cross section, in contrast to th...")
  • 17:16, 5 May 2020Augelite (hist)[125 bytes]Webref (talk | contribs) (Created page with "A monoclinic mineral, Al2 (PO4 )(OH)3 . <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:16, 5 May 2020Audiofrequency (hist)[192 bytes]Webref (talk | contribs) (Created page with "Any frequency corresponding to a normal audible sound wave (ranges roughly from 15,000 to 20,000 Hz). Hunt <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:16, 5 May 2020Attritus (hist)[1,948 bytes]Webref (talk | contribs) (Created page with "# A composite term for dull gray to nearly black coal components of varying maceral content, unsorted and with fine granular texture, that forms the bulk of some coals or is i...")
  • 17:15, 5 May 2020Attritious wear (hist)[255 bytes]Webref (talk | contribs) (Created page with "Wear of abrasive grains in grinding such that sharp edges gradually become rounded. A grinding wheel that has undergone such wear usually has a glazed appearance. ASM, 1 <br/...")
  • 17:15, 5 May 2020Attrition mill (hist)[425 bytes]Webref (talk | contribs) (Created page with "# Mill that grinds abrasively, using rubbing action rather than impact shattering to disintegrate material. Pryor, 3 # A disintegrator depending chiefly on impact to reduce t...")
  • 17:14, 5 May 2020Attrital coal (hist)[344 bytes]Webref (talk | contribs) (Created page with "A bright coal (composed of anthraxylon and of attritus in which the translucent cell-wall degradation matter or translucent humic matter predominates) in which the ratio of an...")
  • 17:13, 5 May 2020Atterberg test (hist)[262 bytes]Webref (talk | contribs) (Created page with "A method for determining the plasticity of clay in terms of the difference between the water content when the clay is just coherent and when it begins to flow as a liquid. Dod...")
  • 17:13, 5 May 2020Atterberg scale (hist)[459 bytes]Webref (talk | contribs) (Created page with "A proposed particle-size scale or grade scale for the classification of sediments based on a decimal system beginning with 2 mm. The limits of the subclass are obtained by tak...")
  • 17:13, 5 May 2020Atterberg limits (hist)[307 bytes]Webref (talk | contribs) (Created page with "In a sediment, the water-content boundaries between the semiliquid and plastic states (known as the liquid limit) and between the plastic and semisolid states (known as the pl...")
  • 17:12, 5 May 2020Attendance signaling system (hist)[274 bytes]Webref (talk | contribs) (Created page with "A signaling system that operates between the surface lamp room and the underground office, indicating the workers in attendance at the beginning of the shift. See also: self-s...")
  • 17:12, 5 May 2020Attapulgite (hist)[271 bytes]Webref (talk | contribs) (Created page with "A light-green, magnesium-rich clay mineral, named from its occurrence at Attapulgus, GA, where it is quarried as fuller's earth. Crystallizes in the monoclinic system. Syn: pa...")
  • 17:12, 5 May 2020Attack rate (hist)[147 bytes]Webref (talk | contribs) (Created page with "Planned rate of ore extraction from mineral deposit. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:11, 5 May 2020Attached ground water (hist)[259 bytes]Webref (talk | contribs) (Created page with "That portion of the subsurface water adhering to the pore walls. It is assumed to be equal in quantity to the pellicular water, and it is measured by specific retention. AGI...")
  • 17:11, 5 May 2020Atopite (hist)[161 bytes]Webref (talk | contribs) (Created page with "A yellow or brown variety of romeite containing fluorine. See also: romeite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:11, 5 May 2020Atomizer (hist)[249 bytes]Webref (talk | contribs) (Created page with "A spray device for producing a very fine mist for the suppression of airborne dust in mines. It is normally operated by compressed air. Syn: jet mixer; line oiler. <br/>Sourc...")
  • 17:11, 5 May 2020Atomized metal powder (hist)[218 bytes]Webref (talk | contribs) (Created page with "Metal powder produced by the dispersion of molten metal by a rapidly moving gas, or liquid stream, or by mechanical dispersion. ASTM <br/>Source: Dictionary of Mining, Minera...")
  • 17:10, 5 May 2020Atomization (hist)[285 bytes]Webref (talk | contribs) (Created page with "# In powder metallurgy, the dispersion of a molten metal into particles by a rapidly moving stream of gas or liquid. ASM, 1 # A patented process for producing a metallic dust...")
  • 17:09, 5 May 2020Atomic volume (hist)[344 bytes]Webref (talk | contribs) (Created page with "# The space occupied by a quantity of an element as compared with its atomic weight. Obtained by dividing the specific gravity of the element by its atomic weight; also called...")
  • 17:09, 5 May 2020Atomic susceptibility (hist)[183 bytes]Webref (talk | contribs) (Created page with "Change in magnetic moment of 1 g.atom on application of magnetic field of unit strength. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:09, 5 May 2020Atomic size (hist)[243 bytes]Webref (talk | contribs) (Created page with "Radius of an atom (average distance from center to outermost electron of neutral atom). Commonly expressed in angstroms. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th...")
  • 17:09, 5 May 2020Atomic scattering factor (hist)[300 bytes]Webref (talk | contribs) (Created page with "Describes the "efficiency" of X-ray scattering of a given atom in a given direction; equal to the amplitude of the wave scattered by an atom divided by the amplitude...")
  • 17:08, 5 May 2020Atomic reactor (hist)[229 bytes]Webref (talk | contribs) (Created page with "A huge apparatus in which a radioactive core heats water under pressure and passes it to a heat exchanger. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Engl...")
  • 17:08, 5 May 2020Atomic plane (hist)[387 bytes]Webref (talk | contribs) (Created page with "# Any one of the layers into which atoms form themselves in an orderly pattern during the growth of a crystal. # In a crystal, any plane with a regular array of atomic units...")
  • 17:07, 5 May 2020Atomic moisture meter (hist)[498 bytes]Webref (talk | contribs) (Created page with "A device to monitor the moisture in coal passing through a preparation plant, by using radiation that is sensitive to hydrogen atoms. The coal is bombarded with neutrons, some...")
  • 17:05, 5 May 2020Atomic distance (hist)[129 bytes]Webref (talk | contribs) (Created page with "Distance between two atom centers. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:05, 5 May 2020Atomic charge (hist)[166 bytes]Webref (talk | contribs) (Created page with "Electrical charge density due to gain or loss of one or more electrons. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:04, 5 May 2020Atoll texture (hist)[500 bytes]Webref (talk | contribs) (Created page with "# A texture sometimes observed in a thin section of a rock, in which a ring of one mineral occurs with another mineral or minerals inside and outside the ring. # In mineral d...")
  • 17:03, 5 May 2020Atoll (hist)[184 bytes]Webref (talk | contribs) (Created page with "A ring of low coral islands arranged around a central lagoon. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall")
  • 17:03, 5 May 2020Atmospheric condenser (hist)[144 bytes]Webref (talk | contribs) (Created page with "A condenser using water at atmospheric pressure. Strock, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:03, 5 May 2020Atmosphere-supplying respirator (hist)[191 bytes]Webref (talk | contribs) (Created page with "A class of respirators that supply a respirable atmosphere, independent of the workplace atmosphere. ANSI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:02, 5 May 2020Atlas spar (hist)[101 bytes]Webref (talk | contribs) (Created page with "Syn: satin spar <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:01, 5 May 2020Atlas ore (hist)[100 bytes]Webref (talk | contribs) (Created page with "See: malachite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:01, 5 May 2020Atlantic suite (hist)[805 bytes]Webref (talk | contribs) (Created page with "One of two large groups of igneous rocks, characterized by alkalic and alkali-calcic rocks. Harker (1909) divided all Tertiary and Holocene igneous rocks of the world into two...")
  • 17:01, 5 May 2020Atlantic Ridge (hist)[258 bytes]Webref (talk | contribs) (Created page with "Belt of mountains under Atlantic Ocean from Iceland to Antarctica and nearly midway between continents; also called mid-Atlantic Ridge. <br/>Source: Leet, L. Don. 1982. Physic...")
  • 17:01, 5 May 2020Atkinson's friction coefficient (hist)[314 bytes]Webref (talk | contribs) (Created page with "The measure of the pressure expended per 1,000 ft/min per square foot of surface traversed in order to create motion under the conditions prevailing. It is expressed as pounds...")
  • 17:00, 5 May 2020Atkinson (hist)[385 bytes]Webref (talk | contribs) (Created page with "The resistance of a section of roadway in which there is a pressure of 1 lb/ft2 (6.9 kPa) throughout the section, when an amount of 1,000 ft3 /s (1 kilocusec or 28.3 m3 /s) of...")
  • 17:00, 5 May 2020Atelestite (hist)[140 bytes]Webref (talk | contribs) (Created page with "A monoclinic mineral, Bi8 (AsO4 )3 O5 (OH) 5 ; yellow. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:00, 5 May 2020Ataxic (hist)[138 bytes]Webref (talk | contribs) (Created page with "Said of an unstratified mineral deposit. CF: eutaxic <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 17:00, 5 May 2020Atacamite (hist)[350 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, 4[Cu2 Cl(OH)3 ] ; trimorphous with paratacamite and botallackite; grass green, in fine crystal aggregates, fibrous or columnar; a supergene mineral in...")
  • 17:00, 5 May 2020At grade (hist)[97 bytes]Webref (talk | contribs) (Created page with "See: graded <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 16:59, 5 May 2020Asymmetrical vein (hist)[138 bytes]Webref (talk | contribs) (Created page with "A vein with unlike mineral sequences on either side. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:25, 4 May 2020Asymmetric unit (hist)[230 bytes]Webref (talk | contribs) (Created page with "The whole group of prototype atoms that, where repeated by the symmetry operations of a space group, generate a crystal structure. CF: unit cell <br/>Source: Dictionary of Mi...")
  • 15:25, 4 May 2020Asymmetric fold (hist)[425 bytes]Webref (talk | contribs) (Created page with "# A fold in which one limb dips more steeply than the other. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall # A fold in wh...")
  • 15:24, 4 May 2020Asymmetric class (hist)[138 bytes]Webref (talk | contribs) (Created page with "The class of crystal forms without any symmetry. Fay <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:24, 4 May 2020Astrophyllite (hist)[199 bytes]Webref (talk | contribs) (Created page with "# A triclinic mineral, (K,Na)3 (Fe,Mn)7 Ti2 Si8O24 (O,OH)7 ; forms a series with kupletskite. # A mineral group. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:23, 4 May 2020Astrogeology (hist)[263 bytes]Webref (talk | contribs) (Created page with "Geology of celestial bodies other than earth. Generally restricted in meaning to geology of extraterrestrial bodies of our planetary system. <br/>Source: Leet, L. Don. 1982. P...")
  • 15:23, 4 May 2020Astringent (hist)[280 bytes]Webref (talk | contribs) (Created page with "# A taste that puckers the mouth; descriptive of certain minerals, such as alum. Fay # Causing contraction, shrinking, or puckering. Webster 3rd # Said of a clay containing...")
  • 15:22, 4 May 2020Astridite (hist)[178 bytes]Webref (talk | contribs) (Created page with "An ornamental stone, consisting mainly of chromojadeite. From Manokwari, New Guinea. English <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:22, 4 May 2020Astrakanite (hist)[99 bytes]Webref (talk | contribs) (Created page with "See: blodite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:22, 4 May 2020Astochite (hist)[204 bytes]Webref (talk | contribs) (Created page with "A blue to gray-violet variety of amphibole; at Wermland, Sweden. Locally known as blue rhodonite. Syn: soda richterite <br/>Source: Dictionary of Mining, Mineral, and Related...")
  • 15:22, 4 May 2020ASTM coal classification (hist)[1,413 bytes]Webref (talk | contribs) (Created page with "A system based on proximate analysis in which coals containing less than 31% volatile matter on the mineral-matter-free basis (Parr formula) are classified only on the basis o...")
  • 15:22, 4 May 2020Asthenosphere (hist)[687 bytes]Webref (talk | contribs) (Created page with "# A zone within earth's mantle where plastic movements occur to permit isostatic adjustments. Begins 50 to 100 km below surface and extends perhaps to 500 km. <br/>Source: Lee...")
  • 15:21, 4 May 2020Asthenolith (hist)[193 bytes]Webref (talk | contribs) (Created page with "A body of magma that was formed by melting in response to heat generated by radioactive disintegration. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:21, 4 May 2020Asteroids (hist)[260 bytes]Webref (talk | contribs) (Created page with "Orbiting small bodies believed to be either fragments of a disintegrated planet or of matter that never completed planet forming process. <br/>Source: Leet, L. Don. 1982. Phys...")
  • 15:21, 4 May 2020Asterism (hist)[979 bytes]Webref (talk | contribs) (Created page with "# Starlike rays of light observed in some minerals when viewed from certain directions, particularly if the mineral is cut en cabochon. Minerals having this feature are called...")
  • 15:20, 4 May 2020Asteriated topaz (hist)[164 bytes]Webref (talk | contribs) (Created page with "Asteriated yellow variety of corundum, wrongly called Oriental topaz. Schaller <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:20, 4 May 2020Asteriated quartz (hist)[167 bytes]Webref (talk | contribs) (Created page with "Quartz having whitish or colored radiations within the crystals. See: star quartz <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:20, 4 May 2020Asteriated (hist)[236 bytes]Webref (talk | contribs) (Created page with "# Like a star, with rays diverging from a center. # Said of a mineral, crystal, or gemstone that exhibits asterism; e.g., asteriated beryl. See: star <br/>Source: Dictionary...")
  • 15:19, 4 May 2020Asteria (hist)[304 bytes]Webref (talk | contribs) (Created page with "Any gemstone that, when cut en cabochon in the correct crystallographic direction, displays a rayed figure (a star) by either reflected or transmitted light; e.g., star sapphi...")
  • 15:19, 4 May 2020Astatization (hist)[307 bytes]Webref (talk | contribs) (Created page with "The application of a restoring force to a moving element of a physical system in such a manner as to drive the moving element away from its rest position and to aid any deflec...")
  • 15:19, 4 May 2020Astatic pendulum (hist)[170 bytes]Webref (talk | contribs) (Created page with "A pendulum having almost no tendency to take a definite position of equilibrium. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:19, 4 May 2020Astatic gravimeter (hist)[336 bytes]Webref (talk | contribs) (Created page with "A gravity meter or gravimeter constructed so that a high sensitivity is achieved at certain positions of the elements of the system; i.e., equilibrium between a negative resto...")
  • 15:18, 4 May 2020Astatic (hist)[316 bytes]Webref (talk | contribs) (Created page with "Not taking a fixed or definite position or direction; as an instrument in which a negative restoring force has been applied so as to aid any deflecting force, thereby renderin...")
  • 15:18, 4 May 2020Assured mineral (hist)[99 bytes]Webref (talk | contribs) (Created page with "See: reserves <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:18, 4 May 2020Association placer location (hist)[408 bytes]Webref (talk | contribs) (Created page with "A placer location made by an association of persons in one location covering 160 acres (64 ha) is not eight locations covering 20 acres (8 ha) each. It is in law a single loca...")
  • 15:17, 4 May 2020Assmann psychrometer (hist)[190 bytes]Webref (talk | contribs) (Created page with "A wet-and-dry-bulb hygrometer in which air is drawn over the thermometer bulbs by an integral fan. BS, 8 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:17, 4 May 2020Assistant mine foreman (hist)[240 bytes]Webref (talk | contribs) (Created page with "A person employed to assist the mine foreman in the performance of his or her duties and to serve in his or her place, in the absence of the mine foreman. <br/>Source: Dictio...")
  • 15:16, 4 May 2020Assigned protection factor (hist)[458 bytes]Webref (talk | contribs) (Created page with "# The expected workplace level of respiratory protection that would be provided by a properly functioning respirator or a class of respirators to properly fitted and trained u...")
  • 15:15, 4 May 2020Asset (hist)[182 bytes]Webref (talk | contribs) (Created page with "Property with cash sale value. In mining, the dominant asset is the proved ore reserve. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:15, 4 May 2020Assessment work (hist)[349 bytes]Webref (talk | contribs) (Created page with "The annual work upon an unpatented mining claim on the public domain necessary under U.S. law for the maintenance of the possessory title thereto. This work must be done each...")
  • 15:15, 4 May 2020Assessment labor (hist)[220 bytes]Webref (talk | contribs) (Created page with "Refers to the annual labor required of the locator of a mining claim after discovery (and not to work done before discovery). Ricketts <br/>Source: Dictionary of Mining, Mine...")
  • 15:15, 4 May 2020Assessment drilling (hist)[228 bytes]Webref (talk | contribs) (Created page with "Drilling done to fulfill the requirement that a prescribed amount of work be done annually on an unpatented mining claim to retain title. Long <br/>Source: Dictionary of Mini...")
  • 15:13, 4 May 2020Assembly rod (hist)[141 bytes]Webref (talk | contribs) (Created page with "An external bolt holding a machine together. Nichols, 1 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:13, 4 May 2020Assembled stone (hist)[272 bytes]Webref (talk | contribs) (Created page with "Any stone constructed of two or more parts of gem materials, whether genuine, synthetic, imitation, or a combination thereof; e.g., a doublet or triplet. Syn: composite stone;...")
  • 15:13, 4 May 2020Assayer (hist)[204 bytes]Webref (talk | contribs) (Created page with "Person who analyzes ores and alloys, esp. bullion, to determine the value and properties of their precious metals. DOT <br/>Source: Dictionary of Mining, Mineral, and Related...")
  • 15:13, 4 May 2020Assay walls (hist)[243 bytes]Webref (talk | contribs) (Created page with "The outer limits to which an orebody can be profitably mined, the limiting factor being the metal content of the country rock as determined from assays. Hess <br/>Source: Dic...")
  • 15:12, 4 May 2020Assay value (hist)[547 bytes]Webref (talk | contribs) (Created page with "# The quantity of an ore's valuable constituents, determined by multiplying its assay grade or percentage of valuable constituents by its dimensions. CF: assay inch; assay foo...")
  • 15:12, 4 May 2020Assay ton (hist)[402 bytes]Webref (talk | contribs) (Created page with "A weight of 29.166+ g, used in assaying to represent proportionately the assay value of an ore. Because it bears the same ratio to 1 mg that a ton of 2,000 lb bears to the tro...")
  • 15:12, 4 May 2020Assay split (hist)[197 bytes]Webref (talk | contribs) (Created page with "Agreed average value, as between buyer's and seller's assay, used as pricing basis in sale of mineral. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:12, 4 May 2020Assay plan factor (hist)[434 bytes]Webref (talk | contribs) (Created page with "In sampling, a term used to describe the rate that the head value bears to the mine sampling. This percentage figure is useful in reducing any extant or subsequent mine-sampli...")
  • 15:11, 4 May 2020Assay plan (hist)[246 bytes]Webref (talk | contribs) (Created page with "Map of a mine showing the assay, stope, width, etc., of samples taken from positions marked. Used to control grade and quality of ore mined and milled. Pryor, 3 <br/>Source:...")
  • 15:11, 4 May 2020Assay office (hist)[204 bytes]Webref (talk | contribs) (Created page with "A laboratory for examining ores, usually gold and silver ores, in order to determine their economic value. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related...")
  • 15:11, 4 May 2020Assay inch (hist)[260 bytes]Webref (talk | contribs) (Created page with "In determining the assay value of an orebody, the multiplication of its assay grade by the number of inches along which the sample was taken. CF: assay foot; assay value. AGI...")
  • 15:11, 4 May 2020Assay grade (hist)[187 bytes]Webref (talk | contribs) (Created page with "The percentage of valuable constituents in an ore, determined from assay. CF: assay value; value. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:10, 4 May 2020Assay foot (hist)[258 bytes]Webref (talk | contribs) (Created page with "In determining the assay value of an orebody, the multiplication of its assay grade by the number of feet along which the sample was taken. CF: assay inch; assay value. AGI <...")
  • 15:10, 4 May 2020Assay balance (hist)[253 bytes]Webref (talk | contribs) (Created page with "A very sensitive balance used in the assaying of gold, silver, etc., for weighing the beads. It usually has magnifying lenses for reading the graduations. See: balance <br/>S...")
  • 15:09, 4 May 2020Aspirator (hist)[186 bytes]Webref (talk | contribs) (Created page with "An apparatus for moving or collecting gases, liquids, or granular substances by suction. Webster 3rd <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:09, 4 May 2020Aspirating (hist)[100 bytes]Webref (talk | contribs) (Created page with "See: dedusting <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:09, 4 May 2020Asphyxiate (hist)[115 bytes]Webref (talk | contribs) (Created page with "To suffocate; to choke. Mason <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:09, 4 May 2020Asphaltite (hist)[281 bytes]Webref (talk | contribs) (Created page with "Any one of the naturally occurring black solid bitumens that are soluble in carbon disulfide and fuse above 230 degrees F (110 degrees C). Examples are uintahite, glance pitch...")
  • 15:08, 4 May 2020Asphaltic rock (hist)[170 bytes]Webref (talk | contribs) (Created page with "Any rock naturally impregnated with asphalt. It is generally sandstone or limestone. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:08, 4 May 2020Asphaltic ore (hist)[144 bytes]Webref (talk | contribs) (Created page with "Asphaltlike ore carrying invisible uranium values. Ballard <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:08, 4 May 2020Asphaltic (hist)[308 bytes]Webref (talk | contribs) (Created page with "Pertaining to or containing asphalt; e.g., asphaltic limestone or asphaltic sandstone impregnated with asphalt, or asphaltic sand representing a natural mixture of asphalt wit...")
  • 15:08, 4 May 2020Asphalt stone (hist)[103 bytes]Webref (talk | contribs) (Created page with "See: asphalt rock <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:07, 4 May 2020Asphalt rock (hist)[216 bytes]Webref (talk | contribs) (Created page with "A porous rock, such as a sandstone or limestone, that is impregnated naturally with asphalt. Syn: asphalt stone; rock asphalt. AGI <br/>Source: Dictionary of Mining, Mineral,...")
  • 15:07, 4 May 2020Asphalt (hist)[302 bytes]Webref (talk | contribs) (Created page with "A brown to black, solid or semisolid bituminous substance. Occurs in nature but is also obtained as residue from refining of certain hydrocarbons ("artificial asphalt&quo...")
  • 15:07, 4 May 2020Asperolite (hist)[163 bytes]Webref (talk | contribs) (Created page with "A variety of chrysocolla, containing more than the usual percentage of water. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:07, 4 May 2020Aspect (hist)[336 bytes]Webref (talk | contribs) (Created page with "# The gross or overall lithologic or biologic characteristics of a stratigraphic unit as expressed at any particular point. AGI # The angle made by a target with the line joi...")
  • 15:06, 4 May 2020Asparagus stone (hist)[138 bytes]Webref (talk | contribs) (Created page with "A yellow-green variety of apatite. Syn: asparagolite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:06, 4 May 2020Asparagolite (hist)[106 bytes]Webref (talk | contribs) (Created page with "See: asparagus stone <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:06, 4 May 2020Ashstone (hist)[132 bytes]Webref (talk | contribs) (Created page with "An indurated deposit of fine volcanic ash. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:06, 4 May 2020Ash-specific gravity curve (hist)[222 bytes]Webref (talk | contribs) (Created page with "The curve obtained from the float-and-sink analysis by plotting the ash contents of successive fractions against specific gravity. BS, 5 <br/>Source: Dictionary of Mining, Mi...")
  • 15:04, 4 May 2020Ash-fusion temperature (hist)[273 bytes]Webref (talk | contribs) (Created page with "The temperature at which a special test cone made from particles of ash obtained from the coal will (1) begin to deform, i.e., soften, or (2) completely deform or fuse into a...")
  • 15:04, 4 May 2020Ashcroftine (hist)[210 bytes]Webref (talk | contribs) (Created page with "A tetragonal mineral, K5 Na5 (Y,Ca)12 Si28 O 70 (OH)2 (CO3 )8 .3H2 O ; occurs in small pink needles at Narsarsuk, Greenland. <br/>Source: Dictionary of Mining, Mineral, and R...")
  • 15:03, 4 May 2020Ash yield (hist)[365 bytes]Webref (talk | contribs) (Created page with "The percentage of material remaining after a fuel is burned; that portion of a laboratory sample remaining after heating under standard conditions to constant weight; i.e., un...")
  • 15:03, 4 May 2020Ash fusibility (hist)[196 bytes]Webref (talk | contribs) (Created page with "A measure, in terms of temperature, of fusion of coal ash prepared and tested under standard conditions. BS, 4 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:03, 4 May 2020Ash error (hist)[303 bytes]Webref (talk | contribs) (Created page with "The difference between the percentage ash of a product of a separation and that shown by the washability curve (based on the reconstituted feed) of a product with the same pro...")
  • 15:02, 4 May 2020Ash drawers (hist)[163 bytes]Webref (talk | contribs) (Created page with "Early name applied to tourmaline because of its polar electrostatic property. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:02, 4 May 2020Ash curve (hist)[303 bytes]Webref (talk | contribs) (Created page with "A graph that shows a relation between the specific gravity of fractions of a coal sample floated in liquids of step-by-step increased density, and the percentage of ash in eac...")
  • 15:01, 4 May 2020Aseismic ridge (hist)[256 bytes]Webref (talk | contribs) (Created page with "An oceanic ridge without extensive seismic activity as, for example, the Hawaiian Island-Emperor Seamount ridge in the Pacific Ocean. <br/>Source: Leet, L. Don. 1982. Physical...")
  • 15:01, 4 May 2020Aschistic (hist)[264 bytes]Webref (talk | contribs) (Created page with "Said of the rock of a minor intrusion that has a composition equivalent to that of the parent magma, i.e., in which there has been no significant differentiation. CF: diaschis...")
  • 15:00, 4 May 2020Aschisite (hist)[197 bytes]Webref (talk | contribs) (Created page with "An igneous rock with the same chemical composition as its parent magma, i.e., undifferentiated. CF: diaschistic <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:00, 4 May 2020Ascharite (hist)[102 bytes]Webref (talk | contribs) (Created page with "See: szaibelyite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 15:00, 4 May 2020Ascensional ventilation (hist)[323 bytes]Webref (talk | contribs) (Created page with "A mine ventilation system in which the fresh intake air flows down to the bottom end of the workings and then ascends along the faces to the main return. See also: descensiona...")
  • 15:00, 4 May 2020Ascension theory (hist)[258 bytes]Webref (talk | contribs) (Created page with "A theory of hypogene mineral-deposit formation involving mineralizing solutions rising through fissures from magmatic sources in the Earth's interior. CF: descension theory <...")
  • 14:59, 4 May 2020Asbolite (hist)[109 bytes]Webref (talk | contribs) (Created page with "See: asbolan; asbolane. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:59, 4 May 2020Asbolane (hist)[262 bytes]Webref (talk | contribs) (Created page with "A form of wad; a soft, earthy manganese dioxide, containing up to about 32% cobalt oxide. Sometimes referred to as earthy cobalt. Syn: asbolite; cobalt ocher. See also: asbola...")
  • 14:59, 4 May 2020Asbolan (hist)[352 bytes]Webref (talk | contribs) (Created page with "A hexagonal mineral, (Co,Ni)1-y (MnO2 )2-x (OH)2-2y+2x .nH2 O ; a soft, black, earthy aggregate commonly classed as a variety of "wad," the cobalt content reaching a...")
  • 14:59, 4 May 2020Asbestus (hist)[99 bytes]Webref (talk | contribs) (Created page with "See: asbestos <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:58, 4 May 2020Asbestos yarn (hist)[396 bytes]Webref (talk | contribs) (Created page with "Yarn consisting of asbestos fiber; asbestos and vegetable fibers; asbestos and vegetable fibers and wire; or asbestos and vegetable fibers with an insert of cotton or other ya...")
  • 14:57, 4 May 2020Asbestos minerals (hist)[607 bytes]Webref (talk | contribs) (Created page with "Certain minerals that have a fibrous structure, are heat resistant and chemically inert, possess high electrical insulating qualities, and are of sufficient flexibility to be...")
  • 14:54, 4 May 2020Asbestine (hist)[395 bytes]Webref (talk | contribs) (Created page with "# A silicate of magnesium much used in paint. It serves as an aid in holding paint pigment in solution and in binding paint films together. Also marketed under such names as F...")
  • 14:54, 4 May 2020Asbestiform (hist)[141 bytes]Webref (talk | contribs) (Created page with "Said of a mineral that is fibrous, i.e., like asbestos. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:54, 4 May 2020Artinite (hist)[144 bytes]Webref (talk | contribs) (Created page with "A snow-white monoclinic mineral, Mg2 (CO3 )(OH)2 .3H 2 O . <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:53, 4 May 2020Artificial refractories (hist)[234 bytes]Webref (talk | contribs) (Created page with "Materials manufactured in electric furnaces and used for special purposes; e.g., zirconium carbide, titanium carbide, and silicon carbide. Newton, 1 <br/>Source: Dictionary o...")
  • 14:53, 4 May 2020Artificial liquid fuel (hist)[300 bytes]Webref (talk | contribs) (Created page with "Fuel created by the hydrogenation of coal; the destructive distillation of coal, lignite, or shale at low temperature; and by a recombination of the constituents of water gas...")
  • 14:53, 4 May 2020Artificial island (hist)[362 bytes]Webref (talk | contribs) (Created page with "An island that is constructed by humans rather than formed by natural means, usually in waters less than 30 m deep. In the mining industry they are commonly used to support th...")
  • 14:53, 4 May 2020Artificial horizon (hist)[252 bytes]Webref (talk | contribs) (Created page with "A device for indicating the horizontal, as a bubble, gyroscope, pendulum, or the flat surface of a liquid. It is sometimes simply called a horizon. Syn: false horizon <br/>So...")
  • 14:53, 4 May 2020Artificial brine (hist)[212 bytes]Webref (talk | contribs) (Created page with "Brine produced from an underground deposit of salt or other soluble rock material in the process of solution mining. CF: brine <br/>Source: Dictionary of Mining, Mineral, and...")
  • 14:52, 4 May 2020Artificial aging (hist)[161 bytes]Webref (talk | contribs) (Created page with "Aging above room temperature. See also: precipitation heat treatment ASM, 1 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:52, 4 May 2020Articulite (hist)[102 bytes]Webref (talk | contribs) (Created page with "See: itacolumite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:52, 4 May 2020Arthurite (hist)[238 bytes]Webref (talk | contribs) (Created page with "# An apple-green monoclinic mineral, CuFe2 (AsO4 ,PO4,SO4 )2 (O,OH)2 .4H2O . # The mineral group arthurite, earlshannonite, ojuelaite, and whitmoreite. <br/>Source: Dictiona...")
  • 14:52, 4 May 2020Artesian well (hist)[507 bytes]Webref (talk | contribs) (Created page with "# A well in which the water level rises above the top of the aquifer, whether or not the water flows at the land surface. AGI # Formerly, only applied to a well drilled to a...")
  • 14:51, 4 May 2020Artesian water (hist)[878 bytes]Webref (talk | contribs) (Created page with "# Water under pressure when tapped by a well and able to rise above level at which first encountered. It may or may not flow out at ground level. <br/>Source: Leet, L. Don. 19...")
  • 14:51, 4 May 2020Artesian spring (hist)[248 bytes]Webref (talk | contribs) (Created page with "A spring, the water from which issues under artesian pressure, generally through some fissure or other opening in the confining bed that overlies the aquifer. AGI <br/>Source...")
  • 14:50, 4 May 2020Artesian leakage (hist)[383 bytes]Webref (talk | contribs) (Created page with "The slow percolation of water from artesian formations into the confining materials of a less permeable but not of a strictly impermeable character. Such percolation causes a...")
  • 14:50, 4 May 2020Artesian discharge (hist)[299 bytes]Webref (talk | contribs) (Created page with "The process of discharge from a well by artesian pressure, and also the quantity of water discharged. The artesian pressure is aided by the buoyancy of the natural gas that en...")
  • 14:50, 4 May 2020Artesian basin (hist)[205 bytes]Webref (talk | contribs) (Created page with "A geologic structural feature or a combination of such features in which water is confined under artesian pressure. AGI <br/>Source: Dictionary of Mining, Mineral, and Relate...")
  • 14:50, 4 May 2020Artesian aquifer (hist)[130 bytes]Webref (talk | contribs) (Created page with "An aquifer that contains artesian water. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:49, 4 May 2020Artesian (hist)[698 bytes]Webref (talk | contribs) (Created page with "# Of, being, or concerning an aquifer in which water rises to the surface due to pressure from overlying water. # Refers to ground water under sufficient hydrostatic head to r...")
  • 14:49, 4 May 2020Arterial road (hist)[138 bytes]Webref (talk | contribs) (Created page with "A main road with secondary roads joining it. Hammond <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:49, 4 May 2020Arsenuranylite (hist)[167 bytes]Webref (talk | contribs) (Created page with "The orthorhombic mineral, Ca(UO2 )4 (AsO4 )2 (OH)4 .6H2 O ; typically orange-red. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:49, 4 May 2020Arsenuranocircite (hist)[201 bytes]Webref (talk | contribs) (Created page with "Syn: heinrichite It is not clear which name has priority as applied to a natural mineral. See also: metaheinrichite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:48, 4 May 2020Arsenpolybasite (hist)[184 bytes]Webref (talk | contribs) (Created page with "A monoclinic mineral, (Ag,Cu)16 (As,Sb)2 S11 . Also spelled arsenopolybasite. CF: antimonpearceite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:48, 4 May 2020Arsenosulvanite (hist)[171 bytes]Webref (talk | contribs) (Created page with "An isometric mineral, Cu3 (As,V)S4 ; forms a series with sulvanite. Syn: lazarevicite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:47, 4 May 2020Arsenopyrite (hist)[490 bytes]Webref (talk | contribs) (Created page with "# A monoclinic mineral, 8[FeAsS] ; pseudo-orthorhombic, prismatic, and metallic silver-white to steel gray; the most common arsenic mineral and principal ore of arsenic; occur...")
  • 14:47, 4 May 2020Arsenolite (hist)[163 bytes]Webref (talk | contribs) (Created page with "An isometric mineral, As2 O3 ; dimorphous with claudetite. Syn: arsenic bloom <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:47, 4 May 2020Arsenolamprite (hist)[143 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral arsenic; dimorphous with arsenic. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:46, 4 May 2020Arsenoclasite (hist)[187 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, Mn5 (AsO4 )2 (OH)4 ; red, from Laangban, Sweden. Also spelled arsenoklasite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:46, 4 May 2020Arsenobismite (hist)[131 bytes]Webref (talk | contribs) (Created page with "A yellowish-green mineral, Bi2 (AsO4 )(OH)3 . <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:46, 4 May 2020Arsenite (hist)[186 bytes]Webref (talk | contribs) (Created page with "A mineral characterized by trivalent antimony and oxygen; e.g., trigonite, Pb3 Mn(AsO3)2 (AsO2 (OH). <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:46, 4 May 2020Arsenious oxide (hist)[107 bytes]Webref (talk | contribs) (Created page with "See: arsenic trioxide <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:45, 4 May 2020Arsenicite (hist)[103 bytes]Webref (talk | contribs) (Created page with "See: pharmacolite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:45, 4 May 2020Arsenical pyrite (hist)[103 bytes]Webref (talk | contribs) (Created page with "See: arsenopyrite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:45, 4 May 2020Arsenical nickel (hist)[112 bytes]Webref (talk | contribs) (Created page with "See: nickeline; niccolite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:45, 4 May 2020Arsenical antimony (hist)[102 bytes]Webref (talk | contribs) (Created page with "See: allemontite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:45, 4 May 2020Arsenic trioxide (hist)[325 bytes]Webref (talk | contribs) (Created page with "A white, odorless, tasteless powder; AsO3 . Used in the manufacture of pigments, glass, and other arsenic compounds, ceramic enamels, and aniline colors; mixed with soda ash f...")
  • 14:44, 4 May 2020Arsenic bloom (hist)[116 bytes]Webref (talk | contribs) (Created page with "See: arsenolite; pharmacolite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:43, 4 May 2020Arsenate (hist)[382 bytes]Webref (talk | contribs) (Created page with "# A salt or ester of an arsenic acid; a compound containing one of the three radicals in which arsenic has a +5 valence: ortho-arsenate, AsO4; meta-arsenate, AsO3 ; pyro-arsen...")
  • 14:42, 4 May 2020Arsenargentite (hist)[113 bytes]Webref (talk | contribs) (Created page with "Possibly a silver arsenide. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:42, 4 May 2020Arroyo (hist)[922 bytes]Webref (talk | contribs) (Created page with "# Flat-floored, vertically walled channel of an intermittent stream typical of semiarid climates; often applied to such features of southwestern United States. Synonymous with...")
  • 14:42, 4 May 2020Arrow (hist)[226 bytes]Webref (talk | contribs) (Created page with "A sharp-pointed, thin metal rod about 1 to 2 ft (0.3 to 0.6 m) long with a ring at the other end, used in surveying; a thin metal peg. Mason <br/>Source: Dictionary of Mining...")
  • 14:41, 4 May 2020Arrojadite (hist)[190 bytes]Webref (talk | contribs) (Created page with "A monoclinic mineral, KNa4 CaMn4 Fe10 Al(PO4 ) 12 (OH,F) ; dark green, forms a series with dickinsonite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:41, 4 May 2020Arrival dealings (hist)[170 bytes]Webref (talk | contribs) (Created page with "Dealing in ores, concentrates, and metals in transit from source to market. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:41, 4 May 2020Arrester (hist)[268 bytes]Webref (talk | contribs) (Created page with "# Any mechanical contrivance or device used to stop or slow up motion. Crispin # Mechanism for the purification of a gas stream that may contain suspended liquids or solids....")
  • 14:41, 4 May 2020Arrested decay (hist)[153 bytes]Webref (talk | contribs) (Created page with "A stage in coal formation when biochemical action ceases. Tomkeieff <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:40, 4 May 2020Arrastre (hist)[277 bytes]Webref (talk | contribs) (Created page with "A circular rock-lined pit in which broken ore is pulverized by stones attached to horizontal poles fastened in a central pillar and dragged around the pit. Also spelled arrast...")
  • 14:40, 4 May 2020Arrastra (hist)[99 bytes]Webref (talk | contribs) (Created page with "See: arrastre <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:40, 4 May 2020Arquerite (hist)[202 bytes]Webref (talk | contribs) (Created page with "A soft, malleable, silver-rich variety of amalgam containing about 87% silver and 13% mercury; from Coquimbo, Chile. <br/>Source: Dictionary of Mining, Mineral, and Related T...")
  • 14:40, 4 May 2020Aromatite (hist)[212 bytes]Webref (talk | contribs) (Created page with "A bituminous stone resembling a fragrant gum resin in color and odor. It was a precious stone in ancient Arabia and Egypt. AGI <br/>Source: Dictionary of Mining, Mineral, and...")
  • 14:23, 4 May 2020Aromatic hydrocarbon (hist)[255 bytes]Webref (talk | contribs) (Created page with "A compound of carbon and hydrogen that contains in its molecular structure a closed and saturated ring of carbon atoms; e.g., benzene, naphthalene, and anthracene. Hackh <br/...")
  • 14:22, 4 May 2020Aromatic compound (hist)[206 bytes]Webref (talk | contribs) (Created page with "A compound derived from the hydrocarbon benzene, C6 H6 , distinguished from that derived from methane, CH4 . Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Relat...")
  • 14:22, 4 May 2020Arochlors (hist)[434 bytes]Webref (talk | contribs) (Created page with "Chlorinated diphenyl materials that are useful as vehicles for pigments used in glass decoration since they volatilize without leaving a carbon residue. Arochlors provide a gr...")
  • 14:22, 4 May 2020Arnimite (hist)[156 bytes]Webref (talk | contribs) (Created page with "Orthorhombic Cu5 (SO4 )2 (OH)6 .3H2 O ; perhaps the mineral antlerite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:22, 4 May 2020Armstrong air breaker (hist)[114 bytes]Webref (talk | contribs) (Created page with "See: compressed-air blasting <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:21, 4 May 2020Armored relict (hist)[245 bytes]Webref (talk | contribs) (Created page with "An unstable relict enveloped by a crystal or by a reaction shell which revented its reaction with the other constituents of the rock. See also: unstable relict <br/>Source: D...")
  • 14:21, 4 May 2020Armored flexible conveyor (hist)[596 bytes]Webref (talk | contribs) (Created page with "A heavy, chain-type flexible conveyor capable of being advanced with the face without dismantling. It is designed either to carry a coal cutter or a cutter loader or to guide...")
  • 14:21, 4 May 2020Armored cable (hist)[202 bytes]Webref (talk | contribs) (Created page with "A cable that is wrapped with metal, usually steel wires or tapes, primarily for physical protection. See also: cable <br/>Source: Dictionary of Mining, Mineral, and Related T...")
  • 14:21, 4 May 2020Armored apron (hist)[155 bytes]Webref (talk | contribs) (Created page with "An apron in which each pan is provided with a separate wearing plate. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:20, 4 May 2020Armor (hist)[153 bytes]Webref (talk | contribs) (Created page with "An outer cable covering that may be either metallic or nonmetallic. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:20, 4 May 2020Armenite (hist)[197 bytes]Webref (talk | contribs) (Created page with "# A hexagonal mineral, BaCa2 Al6 Si9 O30 .2H 2 O ; osumilite group. # Former name for azurite, Armenian stone. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:20, 4 May 2020Armangite (hist)[165 bytes]Webref (talk | contribs) (Created page with "A trigonal mineral, Mn26 As18 O50 (OH)4 (CO 3 ) ; black; near Laangban, Sweden. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:19, 4 May 2020Arm conveyor (hist)[266 bytes]Webref (talk | contribs) (Created page with "A conveyor consisting of an endless belt, or one or more chains, to which are attached projecting arms, or shelves, for handling packages or objects in a vertical or inclined...")
  • 14:19, 4 May 2020Arm (hist)[141 bytes]Webref (talk | contribs) (Created page with "The inclined member or leg of a set or frame of timber. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:19, 4 May 2020Arkosite (hist)[182 bytes]Webref (talk | contribs) (Created page with "A quartzite with a notable amount of feldspar. Syn: arkose quartzite See also: arkosic sandstone <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:19, 4 May 2020Arkosic sandstone (hist)[433 bytes]Webref (talk | contribs) (Created page with "A sandstone with considerable feldspar, such as one containing minerals derived from coarse-grained quartzo-feldspathic rocks (granite, granodiorite, gneiss) or from highly fe...")
  • 14:19, 4 May 2020Arkosic (hist)[117 bytes]Webref (talk | contribs) (Created page with "Having the character of arkose. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:18, 4 May 2020Arkose quartzite (hist)[99 bytes]Webref (talk | contribs) (Created page with "See: arkosite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:18, 4 May 2020Arkose (hist)[1,737 bytes]Webref (talk | contribs) (Created page with "# A detrital sedimentary rock formed by cementation of individual grains of sand size and predominantly composed of quartz and feldspar. Derived from disintegration of granite...")
  • 14:18, 4 May 2020Arkansite (hist)[155 bytes]Webref (talk | contribs) (Created page with "A brilliant, iron-black variety of brookite from Magnet Cove, AR. Fay <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:17, 4 May 2020Arkansas stone (hist)[225 bytes]Webref (talk | contribs) (Created page with "A variety of novaculite found in the Ouachita Mountains of western Arkansas. Also, a whetstone made of Arkansas stone. See also: novaculite <br/>Source: Dictionary of Mining,...")
  • 14:17, 4 May 2020Arkansas diamond (hist)[118 bytes]Webref (talk | contribs) (Created page with "A diamond from Murfreesboro, AR. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:17, 4 May 2020Arizonite (hist)[557 bytes]Webref (talk | contribs) (Created page with "# A hexagonal mineral, Fe2 Ti3 O9 ; in irregular metallic steel-gray masses in pegmatite veins near Hackberry, AZ. Formerly called pseudorutile. # A mixture of hematite, ruti...")
  • 14:17, 4 May 2020Arizona ruby (hist)[184 bytes]Webref (talk | contribs) (Created page with "A deep-red or ruby-colored variety of pyrope garnet of igneous origin, Southwestern United States. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:16, 4 May 2020Arithmetic-mean particle diameter (hist)[274 bytes]Webref (talk | contribs) (Created page with "A measure of the average particle size obtained by summing the products of the size-grade midpoints times the frequency of particles in each class, and dividing by the total f...")
  • 14:16, 4 May 2020Arite (hist)[154 bytes]Webref (talk | contribs) (Created page with "A nickel mineral between nickeline and breithauptite in composition. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:16, 4 May 2020Aridity index (hist)[162 bytes]Webref (talk | contribs) (Created page with "The ratio of a region's potential annual evaporation, as determined by its receipt of solar radiation, to its average annual precipitation.")
  • 14:16, 4 May 2020Argyrythrose (hist)[114 bytes]Webref (talk | contribs) (Created page with "Former name for pyrargyrite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:15, 4 May 2020Argyrose (hist)[112 bytes]Webref (talk | contribs) (Created page with "Former name for argentite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:15, 4 May 2020Argyropyrite (hist)[155 bytes]Webref (talk | contribs) (Created page with "A discredited term for a silver-iron sulfide, probably argentopyrite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:15, 4 May 2020Argyrodite (hist)[167 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, Ag8 GeS6 ; pseudocubic; forms a series with canfieldite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:15, 4 May 2020Argyrite (hist)[134 bytes]Webref (talk | contribs) (Created page with "Former name for argentite; also called argyrose. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:14, 4 May 2020Argulite (hist)[129 bytes]Webref (talk | contribs) (Created page with "A variety of asphaltic sandstone. Tomkeieff <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:12, 4 May 2020Argillization (hist)[215 bytes]Webref (talk | contribs) (Created page with "The replacement or alteration of feldspars to form clay minerals, esp. in wall rocks adjacent to mineral veins. CF: kaolinization <br/>Source: Dictionary of Mining, Mineral,...")
  • 14:12, 4 May 2020Argillite (hist)[358 bytes]Webref (talk | contribs) (Created page with "A compact rock, derived either from mudstone (claystone or siltstone), or shale, that has undergone a somewhat higher degree of induration than mudstone or shale but is less c...")
  • 14:12, 4 May 2020Argillic (hist)[246 bytes]Webref (talk | contribs) (Created page with "Pertaining to clay or clay minerals; e.g., argillic alteration in which certain minerals of a rock are converted to minerals of the clay group. CF: argillaceous <br/>Source:...")
  • 14:12, 4 May 2020Argillation (hist)[177 bytes]Webref (talk | contribs) (Created page with "The development of clay minerals by the weathering of aluminum silicates. CF: kaolinization <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:11, 4 May 2020Argillaceous rock (hist)[420 bytes]Webref (talk | contribs) (Created page with "A sedimentary rock composed of clay-grade particles; i.e., composed of minute mineral fragments and crystals less than 0.002 mm in diameter; containing much colloidal-size mat...")
  • 14:11, 4 May 2020Argillaceous ore (hist)[133 bytes]Webref (talk | contribs) (Created page with "Ore in which the gangue is mainly clay. Osborne <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:11, 4 May 2020Argillaceous limestone (hist)[182 bytes]Webref (talk | contribs) (Created page with "A limestone containing an appreciable amount (but less than 50%) of clay; e.g., cement rock. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:10, 4 May 2020Argillaceous hematite (hist)[210 bytes]Webref (talk | contribs) (Created page with "A brown to deep-red variety of natural ferric oxide containing an appreciable portion of clay (or sand). Syn: ironstone clay <br/>Source: Dictionary of Mining, Mineral, and R...")
  • 14:10, 4 May 2020Argillaceous (hist)[420 bytes]Webref (talk | contribs) (Created page with "# Pertaining to, largely composed of, or containing clay-size particles or clay minerals, such as an argillaceous ore in which the gangue is mainly clay; esp. said of a sedime...")
  • 14:10, 4 May 2020Argil (hist)[144 bytes]Webref (talk | contribs) (Created page with "# Potter's clay; white clay. Standard, 2 # See: aluminite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:09, 4 May 2020Argentopyrite (hist)[151 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, AgFe2 S3 ; dimorphous with sternbergite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:09, 4 May 2020Argentojarosite (hist)[166 bytes]Webref (talk | contribs) (Created page with "A trigonal mineral, AgFe3 (SO4 )2 (OH)6 ; alunite group; yellow to brown-yellow. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:09, 4 May 2020Argentite (hist)[411 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, Ag2 S ; isometric above 180 degrees C; dimorphous with acanthite; massive or as coating; metallic lead-gray; soft, sectile; sp gr, 7.3; in veins with...")
  • 14:09, 4 May 2020Argentine (hist)[368 bytes]Webref (talk | contribs) (Created page with "# A lamellar variety of calcite with a pearly white luster. # Silver-coated white metal. Standard, 2 # A finely divided tin moss or sponge obtained from a solution of tin by...")
  • 14:08, 4 May 2020Argentiferous lead (hist)[116 bytes]Webref (talk | contribs) (Created page with "Lead that contains silver. CMD <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:08, 4 May 2020Argentiferous galena (hist)[106 bytes]Webref (talk | contribs) (Created page with "See: silver lead ore <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:08, 4 May 2020Argentiferous (hist)[104 bytes]Webref (talk | contribs) (Created page with "Containing silver. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:07, 4 May 2020Argentation (hist)[151 bytes]Webref (talk | contribs) (Created page with "The act or process of coating or plating with silver. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:07, 4 May 2020Argentate (hist)[230 bytes]Webref (talk | contribs) (Created page with "# A salt in which silver acts as an acid radical; e.g., ammonium argentate (fulminating silver). Standard, 2 # Having a silvery appearance. CTD <br/>Source: Dictionary of Mi...")
  • 14:07, 4 May 2020Argental mercury (hist)[98 bytes]Webref (talk | contribs) (Created page with "See: amalgam <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:07, 4 May 2020Argall tubular furnace (hist)[265 bytes]Webref (talk | contribs) (Created page with "A tubular roasting furnace consisting of four brick-lined steel tubes 30 ft (9.1 m) long nested together inside two steel tires, which revolve upon steel-faced carrying rolls....")
  • 14:06, 4 May 2020Argall furnace (hist)[267 bytes]Webref (talk | contribs) (Created page with "A reverberatory roasting furnace the hearth of which has a reciprocating movement whereby the ore is caused to move forward by the action of rabbles extending across the heart...")
  • 14:06, 4 May 2020Arfvedsonite (hist)[219 bytes]Webref (talk | contribs) (Created page with "A monoclinic mineral, Na3 (Fe+2 ,Mg)4 Fe+3 Si8 O22 (OH)2 , of the amphibole group; dark green to black; in silica-poor igneous rocks. <br/>Source: Dictionary of Mining, Miner...")
  • 14:06, 4 May 2020Arete (hist)[177 bytes]Webref (talk | contribs) (Created page with "A narrow, saw-toothed ridge developed between cirques. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall")
  • 14:05, 4 May 2020Arents tap (hist)[297 bytes]Webref (talk | contribs) (Created page with "An arrangement by which molten lead from the crucible of a shaft furnace is drawn through an inverted siphon into an exterior basin from which it can be ladled without disturb...")
  • 14:04, 4 May 2020Arenite (hist)[623 bytes]Webref (talk | contribs) (Created page with "# A general name for sedimentary rocks composed of sand-sized fragments irrespective of composition; e.g., sandstone, graywacke, arkose, and calcarenite. AGI # A clean sandst...")
  • 14:04, 4 May 2020Areng (hist)[163 bytes]Webref (talk | contribs) (Created page with "A Bornean term for a yellowish gravelly earth, sometimes containing diamonds. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:04, 4 May 2020Arenaceous (hist)[413 bytes]Webref (talk | contribs) (Created page with "Said of a sediment or sedimentary rock consisting wholly or in part of sand-sized fragments, or having a sandy texture or the appearance of sand; pertaining to sand or arenite...")
  • 14:04, 4 May 2020Areal pattern (hist)[281 bytes]Webref (talk | contribs) (Created page with "A dispersion pattern resulting from widespread rock alteration. Such patterns may outline the boundaries of a group of deposits and thus limit the area that it is necessary to...")
  • 14:03, 4 May 2020Areal map (hist)[180 bytes]Webref (talk | contribs) (Created page with "A geologic map showing the horizontal area or extent of rock units exposed at the surface. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:03, 4 May 2020Areal geology (hist)[305 bytes]Webref (talk | contribs) (Created page with "The branch of geology that pertains to the distribution, position, and form of the areas of the Earth's surface occupied by different types of rock or by different geologic un...")
  • 14:03, 4 May 2020Area of settlement (hist)[133 bytes]Webref (talk | contribs) (Created page with "The surface area affected by subsidence. Briggs <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:03, 4 May 2020Area of influence of a well (hist)[231 bytes]Webref (talk | contribs) (Created page with "The area surrounding a well within which the piezometric surface has been lowered when pumping has produced the maximum steady rate of flow. ASCE <br/>Source: Dictionary of M...")
  • 14:03, 4 May 2020Area of airway (hist)[209 bytes]Webref (talk | contribs) (Created page with "In mine ventilation, the cross-sectional area of the entry or duct through which the air flows; expressed in square meters. <br/>Source: Dictionary of Mining, Mineral, and Re...")
  • 14:02, 4 May 2020Ardennite (hist)[285 bytes]Webref (talk | contribs) (Created page with "# A yellow to yellowish-brown vanadiosilicate of aluminum and manganese that crystallizes in the orthorhombic system. Fay # An orthorhombic mineral, Mn4 (Al,Mg)6 (SiO4 )2(Si3...")
  • 14:02, 4 May 2020Ardeer double-cartridge test (hist)[117 bytes]Webref (talk | contribs) (Created page with "See: sensitivity to propagation <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:02, 4 May 2020Arcwall machine (hist)[107 bytes]Webref (talk | contribs) (Created page with "See: slabbing machine <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:02, 4 May 2020Arctic suite (hist)[260 bytes]Webref (talk | contribs) (Created page with "A group of basaltic and associated igneous rocks intermediate in composition between rocks of the Atlantic suite and the Pacific suite. CF: Atlantic suite; Pacific suite. AGI...")
  • 14:01, 4 May 2020Arcose (hist)[97 bytes]Webref (talk | contribs) (Created page with "See: arkose <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:01, 4 May 2020Arching to a weakness (hist)[100 bytes]Webref (talk | contribs) (Created page with "See: V-arching <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 14:01, 4 May 2020Arching action (hist)[319 bytes]Webref (talk | contribs) (Created page with "The natural process by which a fractured, pulverulent, or plastic material acquires a certain amount of ability to support itself partially through the resolution of the verti...")
  • 14:01, 4 May 2020Arching (hist)[918 bytes]Webref (talk | contribs) (Created page with "# Arch. # Curved support for roofs of openings in mines; constructed archways in masonry. # The development of peripheral cracks around an excavation due to the difference i...")
  • 14:00, 4 May 2020Archimedes' principle (hist)[289 bytes]Webref (talk | contribs) (Created page with "The statement in fluid mechanics that a fluid buoys up a completely immersed solid so that the apparent weight of the solid is reduced by an amount equal to the weight of the...")
  • 13:59, 4 May 2020Arched (hist)[154 bytes]Webref (talk | contribs) (Created page with "Corn. Said of the roads in a mine, when built with stones or bricks. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:59, 4 May 2020Archean (hist)[126 bytes]Webref (talk | contribs) (Created page with "Said of the rocks of the Archeozoic. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:59, 4 May 2020Arch structure (hist)[115 bytes]Webref (talk | contribs) (Created page with "See: abutment; pressure arch. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:58, 4 May 2020Arch set (hist)[142 bytes]Webref (talk | contribs) (Created page with "Steel assemblies used to support mine workings. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:58, 4 May 2020Arch rib (hist)[140 bytes]Webref (talk | contribs) (Created page with "The main load-bearing member of a ribbed arch. Hammond <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:58, 4 May 2020Arch girder (hist)[386 bytes]Webref (talk | contribs) (Created page with "A normal H-section steel girder bent to a circular shape. The usual form consists of halves joined together at the crown by bolts and two fishplates. The arch girder is usuall...")
  • 13:58, 4 May 2020Arch forms (hist)[175 bytes]Webref (talk | contribs) (Created page with "Forms or patterns on which sprung arch bricks are laid to ensure the proper arch contour. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:53, 4 May 2020Arch blocks (hist)[328 bytes]Webref (talk | contribs) (Created page with "Applied to the wooden voussoirs used in framing a timber support for the tunnel roof, when driving a tunnel on the so-called American system. These blocks are made of plank, s...")
  • 13:51, 4 May 2020Arcanite (hist)[119 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, K2 SO4 . <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:50, 4 May 2020Arc welding (hist)[288 bytes]Webref (talk | contribs) (Created page with "A group of welding processes wherein coalescence is produced by heating with an electric arc or arcs, with or without the application of pressure and with or without the use o...")
  • 13:50, 4 May 2020Arc shooting (hist)[366 bytes]Webref (talk | contribs) (Created page with "A method of refraction seismic prospecting in which the variation of travel time (velocity) with azimuth from a shot point is used to infer geologic structure. The term also a...")
  • 13:50, 4 May 2020Arc shear machine (hist)[108 bytes]Webref (talk | contribs) (Created page with "See: universal machine <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:50, 4 May 2020Arc furnace (hist)[273 bytes]Webref (talk | contribs) (Created page with "A furnace in which material is heated either directly by an electric arc between an electrode and the work, or indirectly by an arc between two electrodes adjacent to the mate...")
  • 13:50, 4 May 2020Arc cutter (hist)[246 bytes]Webref (talk | contribs) (Created page with "A device consisting of a bit attached to knuckle-jointed rods used to drill a curved borehole or branched holes from a parent borehole. Syn: Thompson arc cutter <br/>Source:...")
  • 13:49, 4 May 2020Arborescent (hist)[294 bytes]Webref (talk | contribs) (Created page with "Applied to minerals having a treelike form, esp. when fairly massive. If the mineral formation is so thin as to resemble a painting of a tree, it is generally called dendritic...")
  • 13:49, 4 May 2020Arbitrage (hist)[416 bytes]Webref (talk | contribs) (Created page with "An operation that involves a purchase in one market with the simultaneous sale of an equivalent quantity in another market, (e.g., the London Metal Exchange and the New York C...")
  • 13:49, 4 May 2020Aramayoite (hist)[175 bytes]Webref (talk | contribs) (Created page with "A triclinic mineral, Ag(Sb,Bi)S2 ; iron black with perfect cleavage; at Chocaya, Bolivia. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 13:49, 4 May 2020Aragonite sand (hist)[261 bytes]Webref (talk | contribs) (Created page with "Sand-size grains of predominantly aragonite (CaCO3 ) found in shallow, tropical waters. Aragonite forms by chemical precipitation in sea water due to the presence of SO4 ions....")
  • 13:48, 4 May 2020Aragonite (hist)[407 bytes]Webref (talk | contribs) (Created page with "# An orthorhombic mineral, 4[CaCO3 ] ; acicular, pyramidal, tabular, reniform, columnar, or stalactitic habit; formed from hot carbonated water in springs, cavities in basalt,...")
  • 13:48, 4 May 2020Aragon spar (hist)[112 bytes]Webref (talk | contribs) (Created page with "Former name for aragonite. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 12:57, 4 May 2020Aquifuge (hist)[279 bytes]Webref (talk | contribs) (Created page with "# Suggested by Bedier, as the opposite of aquifer. AGI # A rock that contains no interconnected openings or interstices and therefore neither absorbs nor transmits water. CF:...")
  • 12:57, 4 May 2020Aquifer test (hist)[243 bytes]Webref (talk | contribs) (Created page with "In situ procedure, such as single-well (bail test or slug test) and multiple-well pumping tests, used to determine hydraulic properties of an aquifer. Freeze <br/>Source: Dic...")
  • 12:56, 4 May 2020Aquiclude (hist)[338 bytes]Webref (talk | contribs) (Created page with "# An impermeable body of rock that may absorb water slowly but does not transmit it. # A body of relatively impermeable rock that is capable of absorbing water slowly but does...")
  • 12:55, 4 May 2020Aqueous liquor (hist)[261 bytes]Webref (talk | contribs) (Created page with "In the ion-exchange (IX) process, the feed to the exchange columns. In solvent extraction, the aqueous feed containing the metal values to be extracted into the organic phase....")
  • 12:55, 4 May 2020Aqueous fusion (hist)[135 bytes]Webref (talk | contribs) (Created page with "Melting in the presence of water, as a magma. AGI <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 12:53, 4 May 2020Aquarium test (hist)[312 bytes]Webref (talk | contribs) (Created page with "A test conducted by detonating a standard quantity of explosives under water and measuring both the detonation and gas pressures using transducers; useful for evaluating the r...")
  • 12:53, 4 May 2020Aqua regia (hist)[410 bytes]Webref (talk | contribs) (Created page with "A very corrosive, fuming, yellow liquid made by mixing nitric and hydrochloric acids, usually in the proportion of one part by volume of pure nitric acid with three parts by v...")
  • 12:52, 4 May 2020Aqua ammonia (hist)[162 bytes]Webref (talk | contribs) (Created page with "Ammonia water; esp., a solution of ammonia containing 10% ammonia by weight. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 12:52, 4 May 2020AQ (hist)[296 bytes]Webref (talk | contribs) (Created page with "A letter name specifying the dimensions of bits, core barrels, and drill rods in the A-size and Q-series wireline diamond drilling system having a core diameter of 27 mm and a...")
  • 12:52, 4 May 2020Apyrous (hist)[202 bytes]Webref (talk | contribs) (Created page with "# Not changed by extreme heat, e.g., mica; distinguished from refractory. Standard, 2 # Noncombustible. Webster 3rd <br/>Source: Dictionary of Mining, Mineral, and Related T...")
  • 12:51, 4 May 2020Apron wall (hist)[177 bytes]Webref (talk | contribs) (Created page with "That part of a panel wall between the windowsill and the support of the panel wall. ACSG, 1 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 12:51, 4 May 2020Apron rope (hist)[146 bytes]Webref (talk | contribs) (Created page with "The operating rope for the blade front of a scraper. Hammond <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 12:51, 4 May 2020Apron plate (hist)[212 bytes]Webref (talk | contribs) (Created page with "Sheet of copper or special alloy set in front of a stamp battery and coated with mercury to trap and amalgamate gold. Pryor, 3 <br/>Source: Dictionary of Mining, Mineral, and...")
  • 12:51, 4 May 2020Apron feeder (hist)[351 bytes]Webref (talk | contribs) (Created page with "A feeder in which the material is carried on an apron conveyor and in which the rate of feed is adjusted either by varying the depth of material or the speed of the conveyor,...")
  • 12:50, 4 May 2020Apron feed (hist)[157 bytes]Webref (talk | contribs) (Created page with "A method of feeding material forward on an articulated platform. Nelson <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 12:50, 4 May 2020Apron conveyor (hist)[379 bytes]Webref (talk | contribs) (Created page with "# A series of overlapping metal plates or aprons running in an endless chain for transferring material from one place to another. Often used to feed raw material from a bin. A...")
  • 11:25, 4 May 2020Apricotine (hist)[189 bytes]Webref (talk | contribs) (Created page with "Trade name for yellowish-red, apricot-colored quartz pebbles; may be of gem quality; near Cape May, NJ. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:25, 4 May 2020Approximate original contour (hist)[462 bytes]Webref (talk | contribs) (Created page with "The surface configuration achieved by backfilling and grading of the mined area so that the reclaimed area, including any terracing or access roads, closely resembles the gene...")
  • 11:25, 4 May 2020Approved permissible flame safety lamp (hist)[159 bytes]Webref (talk | contribs) (Created page with "A flame safety lamp that has been approved for use in gaseous coal mines. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:24, 4 May 2020Appropriation (hist)[256 bytes]Webref (talk | contribs) (Created page with "In the mining law, the posting of notice at or near the point where the ledge is exposed; next, the recording of the notice; next, the marking of the boundaries. Ricketts <br...")
  • 11:24, 4 May 2020Approach distance (hist)[221 bytes]Webref (talk | contribs) (Created page with "The linear distance, in the direction of feed, between the point of initial cutter contact and the point of full cutter contact. ASM, 1 <br/>Source: Dictionary of Mining, Min...")
  • 11:24, 4 May 2020Appraisal (hist)[199 bytes]Webref (talk | contribs) (Created page with "The estimation or fixing of a money value on anything, such as a gemstone. Differs from valuation and evaluation. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:24, 4 May 2020Appolt oven (hist)[204 bytes]Webref (talk | contribs) (Created page with "An oven for the manufacture of coke, differing from the Belgian oven in that it is divided into vertical compartments. <br/>Source: Dictionary of Mining, Mineral, and Related...")
  • 11:23, 4 May 2020Appliances of transportation (hist)[229 bytes]Webref (talk | contribs) (Created page with "As applied to a coal mine, these include parts of the locomotive, mobile conveyor, and elevator transportation systems for the removal of coal. <br/>Source: Dictionary of Min...")
  • 11:23, 4 May 2020Apparent width (hist)[345 bytes]Webref (talk | contribs) (Created page with "The width of a vein or other tabular formation as determined by borehole intercepts. This width will always be greater than the true width if the borehole intersects the vein...")
  • 11:23, 4 May 2020Apparent volume (hist)[132 bytes]Webref (talk | contribs) (Created page with "True volume plus closed-pore volume. Van Vlack <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:23, 4 May 2020Apparent velocity (hist)[281 bytes]Webref (talk | contribs) (Created page with "The velocity with which a seismic-signal wavefront appears to travel along the surface of the Earth. It exceeds the actual velocity if the wave train is not traveling parallel...")
  • 11:22, 4 May 2020Apparent superposition (hist)[162 bytes]Webref (talk | contribs) (Created page with "The actual or visible order in which strata lie in any locality. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:22, 4 May 2020Apparent specific gravity (hist)[952 bytes]Webref (talk | contribs) (Created page with "# Specific gravity of a rock as measured by water displacement, taking into account the effect of sealed pore spaces as well as constituent minerals. See also: specific gravit...")
  • 11:22, 4 May 2020Apparent resistivity (hist)[247 bytes]Webref (talk | contribs) (Created page with "The measured electrical resistivity between two points on the Earth's surface, which corresponds to the sensitivity the ground would have if it were homogeneous. <br/>Source:...")
  • 11:21, 4 May 2020Apparent porosity (hist)[166 bytes]Webref (talk | contribs) (Created page with "The ratio of the volume of open pore space in a specimen to the exterior volume. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:21, 4 May 2020Apparent plunge (hist)[190 bytes]Webref (talk | contribs) (Created page with "The inclination of a normal projection of lineation in the plane of a vertical cross section. CF: plunge <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:21, 4 May 2020Apparent movement of a fault (hist)[370 bytes]Webref (talk | contribs) (Created page with "The apparent movement observed in any chance section across a fault is a function of several variables: the attitude of the fault; the attitude of the disrupted strata; the at...")
  • 11:20, 4 May 2020Apparent dip (hist)[305 bytes]Webref (talk | contribs) (Created page with "The dip of a rock layer as measured in any exposed section, or direction, not at a right angle to the strike. It is a component of, and hence always less than, the true dip. S...")
  • 11:20, 4 May 2020Apparent density (hist)[305 bytes]Webref (talk | contribs) (Created page with "# The weight (W) of an object or material divided by its exterior volume (Ve ) less the volume of its open pores (Vp ). Apparent density = W/(Ve - Vp ). ACSG, 2 # Weight per...")
  • 11:19, 4 May 2020Apparent cohesion (hist)[347 bytes]Webref (talk | contribs) (Created page with "# In soil mechanics, the resistance of particles to being pulled apart, due to the surface tension of the moisture film surrounding each particle. Also called moisture film co...")
  • 11:19, 4 May 2020Appalachian revolution (hist)[110 bytes]Webref (talk | contribs) (Created page with "See: Appalachian orogeny <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:19, 4 May 2020Appalachian orogeny (hist)[533 bytes]Webref (talk | contribs) (Created page with "# Late Paleozoic Era diastrophism beginning perhaps in the Late Devonian Period and continuing until the end of the Permian Period. AGI # A period of intense mountain-buildin...")
  • 11:18, 4 May 2020Appalachian coalfield (hist)[204 bytes]Webref (talk | contribs) (Created page with "The coal-producing area extending from northern Pennsylvania to Alabama, in and adjacent to the Appalachian Mountains. <br/>Source: Dictionary of Mining, Mineral, and Related...")
  • 11:18, 4 May 2020Aporhyolite (hist)[165 bytes]Webref (talk | contribs) (Created page with "A rhyolite, the groundmass of which was once glassy but has become devitrified. <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:18, 4 May 2020Apophysis (hist)[97 bytes]Webref (talk | contribs) (Created page with "See: tongue <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:18, 4 May 2020Apophyllite (hist)[340 bytes]Webref (talk | contribs) (Created page with "A mineral group, 2[KFCa4 (Si8 O20 ).8H2 O] (fluorapophyllite) with F replaced by (OH) (hydroxyapophyllite) and K replaced by Na (natroapophyllite); occurs in square micaceous...")
  • 11:18, 4 May 2020Apomagmatic (hist)[241 bytes]Webref (talk | contribs) (Created page with "Said of a hydrothermal mineral deposit at an intermediate distance from its magmatic source. The term is little used. CF: telemagmatic; cryptomagmatic. AGI <br/>Source: Dicti...")
  • 11:17, 4 May 2020Apold-Fleissner process (hist)[926 bytes]Webref (talk | contribs) (Created page with "A method of roasting carbonate iron ore in a shaft furnace. The ore sinks continuously down the furnace while a current of hot air or flue gas, with a low carbon dioxide conte...")
  • 11:17, 4 May 2020Apocal (hist)[153 bytes]Webref (talk | contribs) (Created page with "A nongelatinous permissible explosive. Used in coal mining. Bennett <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:17, 4 May 2020Aplogranite (hist)[284 bytes]Webref (talk | contribs) (Created page with "A light-colored rock of granitic texture consisting essentially of alkali feldspar and quartz, with subordinate biotite; muscovite may be present or absent. CF: two-mica grani...")
  • 11:17, 4 May 2020Aplitic (hist)[228 bytes]Webref (talk | contribs) (Created page with "# Pertaining to the fine-grained and saccharoidal texture characteristic of aplites. AGI # Said of an igneous rock having such a texture. AGI <br/>Source: Dictionary of Mini...")
  • 11:16, 4 May 2020Aplite (hist)[510 bytes]Webref (talk | contribs) (Created page with "A light-colored igneous rock characterized by a fine-grained saccharoidal (i.e., aplitic) texture. Aplites may range in composition from granitic to gabbroic, but the term apl...")
  • 11:16, 4 May 2020Aplanatic lens (hist)[170 bytes]Webref (talk | contribs) (Created page with "A lens free from spherical aberration. CF: aberration See also: aplanachromatic lens <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:16, 4 May 2020Aplanachromatic lens (hist)[175 bytes]Webref (talk | contribs) (Created page with "A lens free from both chromatic aberration and spherical aberration. See also: achromatic <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:16, 4 May 2020Aphyric (hist)[223 bytes]Webref (talk | contribs) (Created page with "Said of the texture of a fine-grained or aphanitic igneous rock that lacks phenocrysts. Also, said of a rock exhibiting such texture. AGI <br/>Source: Dictionary of Mining, M...")
  • 11:15, 4 May 2020Aphrodite (hist)[101 bytes]Webref (talk | contribs) (Created page with "See: stevensite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:15, 4 May 2020Aphrite (hist)[183 bytes]Webref (talk | contribs) (Created page with "A foliated or scaly white pearly variety of calcite. Syn: earth foam; foam spar. Standard, 2; Fay <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:06, 4 May 2020Aphothonite (hist)[149 bytes]Webref (talk | contribs) (Created page with "A steel-gray argentiferous variety of tetrahedrite. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:06, 4 May 2020Aphanophyre (hist)[219 bytes]Webref (talk | contribs) (Created page with "A porphyritic igneous rock having a groundmass which the unaided eye cannot distniguish as either crystalline or noncrystalline. CIPW <br/>Source: Dictionary of Mining, Miner...")
  • 11:06, 4 May 2020Aphanitic texture (hist)[229 bytes]Webref (talk | contribs) (Created page with "Individual minerals present but in particles so small that they cannot be identified without a microscope. <br/>Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Engl...")
  • 11:06, 4 May 2020Aphanitic (hist)[426 bytes]Webref (talk | contribs) (Created page with "# Said of the texture of an igneous rock in which the crystalline components are not distinguishable by the unaided eye; also said of a rock or a groundmass exhibiting such te...")
  • 11:05, 4 May 2020Aphanite (hist)[266 bytes]Webref (talk | contribs) (Created page with "Any fine-grained igneous rock whose components are not distinguishable with the unaided eye; a rock having aphanitic texture. CF: aphanitic Syn: cryptomere; felsite; felsitoid...")
  • 11:05, 4 May 2020Aphanesite (hist)[100 bytes]Webref (talk | contribs) (Created page with "See: clinoclase <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:05, 4 May 2020Apex law (hist)[857 bytes]Webref (talk | contribs) (Created page with "# This law gives the owner of a properly located claim on a vein the right to an indefinite extension on the dip of the vein beyond the vertical planes through the side lines...")
  • 11:04, 4 May 2020Apex (hist)[996 bytes]Webref (talk | contribs) (Created page with "# The highest point of a vein relative to the surface, whether it crops out or not. The concept is used in mining law. See also: apex law AGI # The tip, summit, or highest po...")
  • 11:04, 4 May 2020Apatite (hist)[409 bytes]Webref (talk | contribs) (Created page with "# Any hexagonal or monoclinic pseudohexagonal mineral with the general formula A5 (XO4 )3 (F,Cl,OH) , where A = (Ba,Ca,Ce,K,Na,Pb,Sr,Y) and X = (As,C,P,Si,V). Syn: calcium pho...")
  • 11:03, 4 May 2020Apatelite (hist)[148 bytes]Webref (talk | contribs) (Created page with "A hydrous ferric sulfate, found in yellow nodules in clay. Fay <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:03, 4 May 2020Apartalite (hist)[97 bytes]Webref (talk | contribs) (Created page with "See: zincite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:03, 4 May 2020Anvil vise (hist)[130 bytes]Webref (talk | contribs) (Created page with "A vise with an anvil on one jaw. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:03, 4 May 2020Anvil stone (hist)[166 bytes]Webref (talk | contribs) (Created page with "Eng. Blue building stone, forming a bed of irregular anvil-shaped blocks. Arkell <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:03, 4 May 2020Anvil jaw (hist)[95 bytes]Webref (talk | contribs) (Created page with "See: anvil <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 11:02, 4 May 2020Anvil block (hist)[247 bytes]Webref (talk | contribs) (Created page with "A massive block of cast iron placed beneath the anvils of steam and other heavy hammers to absorb vibration. It is often embedded in masonry or concrete. Crispin <br/>Source:...")
  • 11:00, 4 May 2020Antozonite (hist)[356 bytes]Webref (talk | contribs) (Created page with "A dark-violet to black semiopaque variety of fluorite that emits a strong odor when crushed; commonly causing nausea among miners, perhaps owing to free fluorine; produced by...")
  • 10:59, 4 May 2020Antofagasite (hist)[102 bytes]Webref (talk | contribs) (Created page with "See: eriochalcite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 10:59, 4 May 2020AN-TNT slurry (hist)[161 bytes]Webref (talk | contribs) (Created page with "Mixture of ammonium nitrate and trinitrotoluene used as an explosive. Lewis <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 10:59, 4 May 2020Antlerite (hist)[319 bytes]Webref (talk | contribs) (Created page with "An orthorhombic mineral, 4[Cu3 SO4 (OH)4 ] ; forms emerald to blackish-green striated crystals or parallel aggregates; may be reniform or massive; in oxidized parts of copper...")
  • 10:59, 4 May 2020Antiturbidity overflow system (hist)[361 bytes]Webref (talk | contribs) (Created page with "A system fitted to a drag suction hopper dredge which disperses entrained gases from the overflow in a settling tank and discharges the degassed overflow below the surface. Th...")
  • 10:58, 4 May 2020Antitropal ventilation (hist)[292 bytes]Webref (talk | contribs) (Created page with "Ventilation by a current of air traveling in the opposite direction to that of the flow of mineral out of the mine. See also: ascensional ventilation; descensional ventilation...")
  • 10:58, 4 May 2020Antithetic shear (hist)[107 bytes]Webref (talk | contribs) (Created page with "See: antithetic fault <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 10:58, 4 May 2020Antithetic fault (hist)[237 bytes]Webref (talk | contribs) (Created page with "A fault that dips in the opposite direction from the direction in which the associated sediments dip. Opposite of synthetic fault. Syn: antithetic shear <br/>Source: Dictionar...")
  • 10:58, 4 May 2020Antistress mineral (hist)[424 bytes]Webref (talk | contribs) (Created page with "A term suggested for minerals such as cordierite, the feldspars, the pyroxenes, forsterite, and andalusite, whose formation in metamorphosed rocks is believed to be favored by...")
  • 10:57, 4 May 2020Antistatic (hist)[327 bytes]Webref (talk | contribs) (Created page with "Descriptive of materials that normally have high insulating qualities, e.g., rubber hoses and belts that have been rendered conductive to reduce risk of sparks or electric sho...")
  • 10:57, 4 May 2020Antiperthite (hist)[459 bytes]Webref (talk | contribs) (Created page with "An intergrowth of a sodic and a potassic feldspar, generally considered to have formed during slow cooling by the unmixing of sodium and potassium ions in an originally homoge...")
  • 10:57, 4 May 2020Antipathy of minerals (hist)[421 bytes]Webref (talk | contribs) (Created page with "The incompatibility of certain rock-forming minerals, according to the theory of fractional crystallization, results from their being too far apart in a crystallization sequen...")
  • 10:57, 4 May 2020Antinode (hist)[289 bytes]Webref (talk | contribs) (Created page with "A point, line, or surface in a standing wave system where some characteristic of the wave field has maximum amplitude. Antinodes, like nodes, may be of several types, such as...")
  • 10:57, 4 May 2020Antimony trioxide (hist)[99 bytes]Webref (talk | contribs) (Created page with "See: valentite <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 10:56, 4 May 2020Antimony star (hist)[177 bytes]Webref (talk | contribs) (Created page with "The fernlike marking on the upper surface of the metal antimony when well crystallized. Fay <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
  • 10:56, 4 May 2020Antimony regulus (hist)[166 bytes]Webref (talk | contribs) (Created page with "An impure product of the smelting process; largely antimony sulfide. Standard, 2 <br/>Source: Dictionary of Mining, Mineral, and Related Terms")
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