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  1. A textile material used in ore treatment plants for catching coarse free gold and some associated minerals; e.g., pyrite. The blanket is taken up periodically and washed in a tub to remove the gold concentrate, from which the gold is recovered by amalgamation. CF: blanket deposit; blanket vein.
  2. Soil or broken rock left or placed over a blast to confine or direct throw of fragments. Nichols, 1
  3. A thin, widespread sedimentary body whose width-thickness ratio is greater than 1,000: 1 and may be as great as 50,000: 1. Syn: sheet AGI

Source: Dictionary of Mining, Mineral, and Related Terms

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