Fluorite : CaF2
Tetrahedrite Subgroup : Cu6(Cu4C2+2)Sb4S12S
As recorded:
Butte Mining District, Silver Bow County, Montana, USA
Photo added to mindat.org
“Pale purple to clear fluorite spheres and cubes with black tetrahedrite crystals. FOV is 10mm across.
Rick Dalrymple Specimen & Photo.”
Rick Dalrymple - 29th July 2013
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