Hübnerite from Pinal Mountains Mining District, Pinal Mountains, Gila County, Arizona, USA
USA | |
| Wilson, E.D. (1941), Tungsten Deposits of Arizona. Arizona Bureau of Mines Bull. 148 MRDS database Dep. ID #10009943, MRDS ID #D003242. |
| A.I.M.E. Ore Deposits of the Western States (1933): 605. |