Baryte from selected localities.
USA | |
| Bastin, Edson S. 1931. The Fluorspar deposits of Hardin and Pope Counties, Illinois. Bulletin No. 58 |
Mineralogical Record (1997) 28:3-49 | |
Matrix (2001) 9:32-34; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S.G.S. Bulletin 255 | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
Knight Mine, Hardin County, Illinois, USA