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Copper, Epidote, Calcite<br />Lake Superior copper district, Keweenaw County, Michigan, USA<br />140 mm x 90 mm x 25 mm<br /> (Author: Robert Seitz)

Copper, Epidote, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
140 mm x 90 mm x 25 mm
(Author: Robert Seitz)

Dimensions: 1600 x 1200
File size: 233.06 kbytes
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