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  • (geology)
  1. A mass or body of rock particles, mineral grains, or a mixture of both. AGI
  2. Any of several hard, inert materials, such as sand, gravel, slag, or crushed stone, mixed with a cement or bituminous material to form concrete, mortar, or plaster, or used alone, as in railroad ballast or graded fill. The term can include rock material used as chemical or metallurgical fluxstone. See also: chippings; coarse aggregate; fine aggregate; lightweight aggregate. AGI
    Source: Dictionary of Mining, Mineral, and Related Terms
  • (sociology) A number of individuals that have temporary physical proximity and no lasting pattern of interrelations or organization. Such a group will disperse after the reason that attracted them together has disappeared. Examples of aggregates would be crowds, mobs, rioters, and audiences.

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