Covellite from Oklahoma, USA
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Rocks & Min. vol. 72 (1997) |
| www.brightok.net/~rockman/Images/OkIndex.htm. |
Lisa19 |