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The World's Rarest Mineral Is So Rare It's Only Ever Been Found OnceGeologists think that was likely igneous in origin, an inclusion in a type of common volcanic rock called pegmatite, common in the region where the stone was found. Like granite, pegmatite's ...
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Abandoned North Carolina Mine Poses Possible Threat to Water SupplyThe lithium at Kings Mountain exists in granite-like pegmatite rock, bound to a green-tinged mineral called spodumene. To study potential contamination, researchers collected samples of pegmatite ...
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