Tennantite, Bornite - Butte Mining District (Summit Valley Mining District), USA
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Tennantite, Bornite
Now here is a wonderful old Butte classic - a rich specimen of sharp, triangular crystals of tennantite, with gunmetal luster, on a base of bornite (with minor associated chalcopyrite). This is old material from an classic American mining locality!
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Known provenance
2024/08UnknownNot disclosed
UnknownThe ArkenstoneNot disclosed
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