Gypsum from selected localities.
USA | |
| USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10258468. |
| USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10234327. |
Galbraith, F.W. & Brennan (1959), Minerals of AZ: 60.; Stone, R.W. (1920), Gypsum deposits of the United States, USGS Bulletin 697: 51-52.; Keith, S.B. (1969), Gypsum, in USGS & Arizona Bureau of Mines, and U.S. Bureau of Reclamation 1969, Mineral and water resources of Arizona, Arizona Bureau of Mines Bulletin 180. |