A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Chalcocite with chalcopyrite |
|---|---|
| Description | Chalcocite, Cu2S (copper sulfide), is often found with chalcopyrite CuFeS2. Chalcocite is shiny and lead-gray when freshly broken, but turns black and becomes sooty when exposed to air. Chalcopyrite is yellow, sometimes slightly orangish or with a hint of green, when fresh. It may tarnish, as seen in this sample. Chalcocite and chalcopyrite are both important sources of copper (and iron). |
| Photographer | Darla Sondrol. 2001-07-10. |
| Collection | University of North Dakota Mineralogy Collection. |
| Key words | chalcocite |
| Tech details | 461 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1094 |
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