Hematite from selected localities.
USA | |
| Mineral Associations at Butte, Montana, D.C. Bard & M.H. Gidel, 1914. |
The Mineralogy of The Butte District, Montana; Guilbert and Zeihen 1964 | |
Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155. | |
USGS Bull 574 |