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USA | |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 65. |
- Eagle Mountains Mining District (Monte Negro Mining District)
| (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: 68 Woodford, A.O. & T.F. Harriss (1928), Geology of Blackhawk Canyon, San Bernardino Mountains, California: University of California, Department of Geological Sciences Bulletin: 17: 265, 268 Baker, Charles L. (1911), Notes on the later Cenozoic history of the Mohave Desert region in southeastern California: California University Department of Geological Science Bulletin: 6: 337 |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 68, 204. Turner, Henry Ward (1908), Unusual gold ore: Mining and Scientific Press: 97: 835 |
- Lucerne Valley Limestone District
| Brown, Howard J., (2019) Geology of White Knob Quarry, Southern California Friends of Mineralogy 2019 Spring Symposium presentation. |