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USA | |
- Mokelumne Hill Mining District
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 316.
Mining and Scientific Press (1866), The “opal claims” of Stockton Hill: Mining and Scientific Press: 12: 146 |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- Paymaster Mining District
| Strong, M. F. 1971a Desert Gem Trails. A Field Guide to the Gems and Minerals of the Mojave and Colorado Deserts: Second Revised Edition, Gem Guides Book Co., Baldwin Park, CA, 80 p. |
- El Paso Mountains District
| MacLachlan, D. 1950 The Greatest Collecting Area: Lapidary Journal, v. 4, no. 2, p. 96-100. |
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| Strong, M. F. 1971a Desert Gem Trails. A Field Guide to the Gems and Minerals of the Mojave and Colorado Deserts: Second Revised Edition, Gem Guides Book Co., Baldwin Park, CA, 80 p. |
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| Berkholz, M. F. 1962b Map |
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| Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314. |
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| Perry, L. E. 1961 Varied agate types and locations in California: Lapidary Journal, v. 15, no. 3, p. 308-314. |
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| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.
Kunz, George Frederick (1901), Precious stones: Mineral Resources U.S., 1900: 763 |
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| Lapidary Journal, 1954 Rock Hound Buyer's Guide, p. 135. |
Cady Mountains, San Bernardino County, California, USA