|
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| ArcelorMittal |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| 55TH INSTITUTE ON LAKE SUPERIOR GEOLOGY (2009) PROCEEDINGS VOLUME 55 p. 70-71 (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| ArcelorMittal |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Frank Karasti |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Gruner prospect, Virginia, St. Louis County, Minnesota, USA