Smoky Quartz from Texas, USA
USA | |
| F Roberts, 2006 |
| Min News 8:1 pp8-10 |
| "Dan Costian" Collection |
| Rocks & Minerals (1970): 45(6): 371-379. |
| Landes, K.K. (1932) The Barringer Hill, Texas, pegmatite. The American Mineralogist: 17(8): 381-390. |
| Self-collected by Franklin Roberts. |
Min News 14:6 pp 1,6,7 | |
| Paul J. Broyles |
Badu Hill quarry, Llano, Llano County, Texas, USA