Stilpnomelane from selected localities.
USA | |
| Mineralogy of Michigan (2004) Heinrich & Robinson |
| La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73. |
USA | |
| Mineralogy of Michigan (2004) Heinrich & Robinson |
| La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73. |