Bornite from Grand Canyon National Park, Arizona, USA
USA | |
| Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7.. |
| Noble, L.F. (1914), Shinumo quadrangle, USGS Bull. 549: 93-96. |
USA | |
| Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7.. |
| Noble, L.F. (1914), Shinumo quadrangle, USGS Bull. 549: 93-96. |