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Abrasive – Substance used to cut and polish rocks.
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Detailed description, properties, and locality information guide about the copper ore mineral chalcopyrite.
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John Betts Fine Minerals, New York, NY Dealers of Fine Minerals and Natural Crystal Clusters since 1989. Journal of weekly news and commentaries about rocks and ...
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Uses of Copper. Native copper was probably one of the early metals worked by ancient people. Nuggets of the metal could be found in streams in a few areas, and its ...
Galena is a lead sulfide mineral. It is the world''s most important ore of lead and a significant ore of silver.
Detailed description, properties and locality information guide about the lead ore mineral galena.
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