East Colusa Mine, Berkeley Pit, Butte, Butte District, Silver Bow Co., Montana, USA
Copyright © Rock Currier
Copyright © Rock Currier  - This image is copyrighted. Unauthorized reproduction prohibited.
East Colusa Mine, Berkeley Pit, Butte, Butte District (Summit Valley District), Silver Bow Co., Montana, USA
Chalcocite after covellite. Specimen is from the collection of Harvard University #108765 (1972). Scale at bottom of image is an inch with a rule at one cm.
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27th Dec 2009
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