|
USA | |
| Fairbanks, Harold W. (1904), Gypsum deposits in California: USGS Bulletin 223: 121. |
| Ver Planck, Wm. E., Jr. (1952), Gypsum in California: California Division Mines Bulletin 163: No. 61, p. 125. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Murdoch, Joseph, Webb, Robert W. (1966) Minerals of California, Centennial Volume (1866-1966) - California Division Mines and Geology, Bulletin 189. p.1-559. Hess, Frank L. (1920), Gypsum deposits of California, in Stone, R.W., Gypsum deposits of the United States: USGS Bulletin 697: 77 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |