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USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 423 Dale, V.B. (1959), Tungsten deposits of Yuma, Maricopa, Pinal and Graham Cos., AZ, US Bur. Mines Rept. Inv. 5516 Wilson, E.D. (1941), AZ Bur. Mines Bull. 148: 26-27. |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 423 Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 79. Hess, Frank L. (1917), Tungsten minerals and deposits, USGS Bull. 652: 25 Wherry, E.T. (1915), Notes on wolframite, beraunite, and axinite, US Nat. Museum Proceedings: 47: 501-511 |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 363 Schaller, Waldemar T. (1932) Chemical composition of cuprotungstite. American Mineralogist, 17 (6) 234-237 |
Cave Creek Mining District, Palo Verde Mountains, Maricopa County, Arizona, USA