Iridescent Bornite

Iridescent Bornite from Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Collection

John Betts - Fine Minerals

Description

Highly iridescent Bornite embedded in gray matrix. The Bornite has bright blue to violet iridescence on the weathered surfaces but shows yellow color on the sawn bottom where it was freshly exposed. The coloring may have been also been enhanced by acid.

Locality

Leonard Mine, Butte Mining District, Summit Valley, Silver Bow County, Montana

Dimensions

7 x 5 x 4 cm.


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