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Covellite replaced by Bornite with Pyrite, Enargite, Quartz, Brochantite, Malachite, Gypsum
specimen number:
3671093
location:
East Colusa mine, Butte, Silver Bow Co., Montana, USA
description:
Wonderful colorful classic example from this famous mining district. Platy bladed crystals of covellite to 3.0 cm in size been replaced by bornite. These are topped off with green crystallized brochantite and malachite. Pyrite, enargite, and quartz scattered throughout. Gypsum present as well. This in good condition and quite neat.
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