Calcite with Bornite, Pyrite
specimen number:
3671017
location:
Steward mine, Butte, Silver Bow Co., Montana, USA
description:
Double terminated scalenohedral crystals of calcite to 3.0 cm in length on a matrix with bornite and minor pyrite. Some cleaving present as seen, this still I think in very good condition. Excellent combination piece and somewhat unusual for this famous locality.
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