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USA | |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. www.mineralsocal.org |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| [Opal-A var. Opal-AN] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 355. |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Troxel, Bennie Wyatt, Stinson, M.C., and Chesterman, C.W. (1957) Uranium. California Division of Mines Bulletin 176: 672-674 Van Nostrand Reinholt Press: 355. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 162. Rogers, Austin Flint (1922), A new occurrence of cristobalite in California: Journal of Geology: 30: 211-216 |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Fleischer, P. (1972) Sepiolite associated with Miocene diatomite, Santa Cruz basin, California. American Mineralogist: 57: 903-913 Van Nostrand Reinholt Press: 441. |
Coso Mine, Coso Hot Springs deposit, Coso Hot Springs, Inyo County, California, USA