Magnetite from selected localities.
USA | |
| Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155. |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates. | |
Guidebook for the Butte Field Meeting of the Society Of Economic Geologists, 1973 | |
Guidebook for the Butte Field Meeting of the Society Of Economic Geologists, 1973 |