Schorl from Pinal County, Arizona, USA
USA | |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 102. |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 401 Simons, F.S. (1964), Geology of the Klondyke quadrangle, Graham and Pinal Cos., AZ: USGS PP 461. |
| Anthony, J.W. , et al (1995),Mineralogy of Arizona, 3rd.ed.: 401 Kuhn, Truman H. (1941), Pipe deposits of the Copper Creek area, AZ, Economic Geology: 36: 512-538. | |
| C. Lemanski, Jr. (self-collected) | |
| 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. |
| King, Van (n.d.) Personal communcation. |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 104. | |
| J.Ralph |
Willow Spring Ranch area, Oracle, Oracle Mining District, Pinal County, Arizona, USA