Gypsum from selected localities.
USA | |
| [var: Satin Spar Gypsum] USGS Bull 1538D |
| U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| [var: Satin Spar Gypsum] USGS Bull 1538D |
USGS Bull 1538D | |
U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |