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USA | |
| Carlson, S. M., Robinson, G. W., Elder, M. J., Jaszczak, J. A., Bornhorst, T. J. (2007) Greenockite and Associated Uranium-Vanadium Minerals From the Huron River Uranium Prospect, Baraga County, Michigan. Rocks & Minerals: 82(4): 298-308. |
| Shawn Carlson (2010) Mineral News, 26, #11, 1-2 & 9-10. |
| Travis Olds collection |