Perthite from Texas, USA
USA | |
| BEG Min Res Circ 73 |
BEG Min Res Circ 73 | |
BEG Min Res Circ 73 | |
| BEG Min Res Circ 73 |
| Landes, K.K. (1932) The Barringer Hill, Texas, pegmatite. The American Mineralogist: 17(8): 381-390. |
USA | |
| BEG Min Res Circ 73 |
BEG Min Res Circ 73 | |
BEG Min Res Circ 73 | |
| BEG Min Res Circ 73 |
| Landes, K.K. (1932) The Barringer Hill, Texas, pegmatite. The American Mineralogist: 17(8): 381-390. |