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USA | |
| (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: 364. Lindgren, Waldemar (1894a), The gold-silver veins of Ophir, California: UGS 14th. Ann. Report, part 2: 273 |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 364. Lindgren, Waldemar (1894a), The gold-silver veins of Ophir, California: UGS 14th. Ann. Report, part 2: 265. Pl. 17 |
| (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: 364. Lindgren, Waldemar (1894a), The gold-silver veins of Ophir, California: UGS 14th. Ann. Report, part 2: 273 |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 364. Lindgren, Waldemar (1894a), The gold-silver veins of Ophir, California: UGS 14th. Annual Report, part 2: 273 |