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Rocks and Minerals 3rd grade Flashcards | Quizlet

Rocks and Minerals 3rd grade Flashcards | Quizlet

Mining is the extraction of valuable or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef or placer deposit.These deposits form a mineralized commodity that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, salt, potash, gravel, and clay

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