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USA | |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 308. Turner, Henry Ward (1891), The geology of Mount Diablo, California: Geological Society of America Bulletin: 2: 391 |
- Salmon Falls Mining District (Flagstaff Hill area)
- Pilliken Mine (Pillikin Mine; Pillikan Mine; Pilliken Chrome Mine)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Pelletier, 1962. Mineral Species & Localities of Marin County |
- Nevada City Mining District
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 308. Lindgren, Waldemar (1896a), The gold-quartz veins of Nevada City and Grass Valley districts, California: USGS 17th. Annual Report, part 2: 52 |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 308. Lawson, Andrew Cowper (1895), Sketch of the geology of the San Francisco peninsula: USGS 15th. Ann. Report: 447 Palache, Charles (1894a), The Iherzolite serpentine and associated rocks of the Potrero, San Francisco: University of California, Department of Geological Sciences Bulletin: 1: 166 |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 308. |
| Morrill & Hinckley, 1959. Maine Mines & Mineral Localities, Vol. 2. |
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| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Jensen (1978) Minerals of New York State, pp.42-43 |