Copper with Silver
Keweenaw Peninsula, Michigan, USA
140 x 90 x 50mm
A classic cabinet size Michigan Copper specimen with minor Quartz and a few patches of bright native Silver.
There is also a cavity with larger crystals that have a red patina. Weight is 1lb, 9.6oz, or 727 grams.
There is also a cavity with larger crystals that have a red patina. Weight is 1lb, 9.6oz, or 727 grams.
From:Marin Minerals
Reference:J40
minID: C3C-1EY
Verified:31st Jul 2019
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