Black shale from Idaho, USA
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Allen, K. D. (1990). Geology and Mineralization of the Grouse Creek Au-Ag Deposit Custer County, Idaho. MS Thesis Boise State University |