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Wurtzite inverted to Sphalerite with Tennantite, Pyrite
specimen number:
3671057
location:
300 level, Gagnon mine, Butte, Silver Bow Co., Montana, USA
description:
What at one time was a crystallized grouping and mass of wurtzite, this now inverted to sphalerite. Minor sphalerite, tennantite, and pyrite present. Material from the very early 1900s.
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