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Why Is It E Pensive To Quarry Copper Sulfide

The copper in the sheathing was mined at kennecott utah copper corp.S bingham canyon this superb, 10-inch, cut and polished half nodule of variscite from utahs clay canyon has a deep green color and a rind and veining of yellow crandallite.S a source of minerals, gemstones and fossils, a natural history museum.Indd 26 12815 958 pm 27.

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