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DenverDwight: Pegmatite specimen. About 6 inches across.
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DenverDwight: Black octahedral crystal in pegmatite
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DenverDwight: Two unknown octahedral crystals
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DenverDwight: Pegmatite sample
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DenverDwight: Pegmatite sample
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DenverDwight: Pegmatite sample
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DenverDwight: Pegmatite sample