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USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 217 |
| Olds, T. A. (2012). Mercury Minerals of the Huron River Uranium Prospect, Baraga County, Michigan. Rocks & Minerals, 87(2), 134-141. Travis Olds collection |
| DeMatties, T. A. (2018). Effects of paleoweathering and supergene activity on volcanogenic massive sulfide (VMS) mineralization in the Penokean Volcanic Belt, northern Wisconsin, Michigan and east-central Minnesota, USA: Implications for future exploration. Ore Geology Reviews, 95, 216-237. Quigley, Tom, and Mahin, Bob, 2008, Back Forty Geology and Mineralization: Proceedings of the Institute on Lake Superior Geology, v. 54, Part 2 - Field Trip Guidebook, 66-85. |
| Robert C. Smith, II, Ph.D., P.G. My collection. Quantitative SEM/EDS. |