Bornite with Tennantite, Chalcocite, Pyrite, Quartz
specimen number:
3671083
location:
Badger mine, Butte, Silver Bow Co., Montana, USA
description: Very fine classic Butte specimen said to have been mined during World War I. Large crude crystals of bornite to almost 2.0 cm in size across the front of this crystallized quartz matrix with minor tennantite, chalcocite, and pyrite. In very good condition.
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