A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Native copper in volcanic breccia |
|---|---|
| Description | This sample, from the Calumet-Atecla Mine in Houghton, Michigan, contains native copper (mostly tarnished red-brown) in a volcanic breccia. Native copper was once a major copper ore mineral, but most large deposits have been mined out. A few places, including especially the Upper Peninsula of Michigan, are known for producing spectacular specimens. This specimen is 17 cm across. |
| Location | USA ▹ Michigan. Near Houghton. Calumet and Atecla Mines. |
| Photographer | Darla Sondrol. 2001-06-25. |
| Collection | University of North Dakota Mineralogy Collection #35. |
| Key words | Native copper, volcanic breccia, Michigan, breccia |
| Tech details | 584 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 845 |
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