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USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 214 Gilluly, J. (1937), Geology and ore deposits of the Ajo quadrangle, AZ, AZ Bur. of Mines Bull. 141. |
| Galbraith, F.W. & Brennan (1959), Minerals of AZ: 89. |
| Michael Cline Collection |
| Data provided by Janet Clifford, Cleveland Micromineral Symposium |
| t: Bunch, T.E. and L.H. Fuchs (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. Amer. Mineral., 54, 1509–1518. |
Phelps Dodge Corporation Well No. 1, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USA