Feldspar Group from selected localities.
USA | |
| [var: Perthite] USGS Prof Paper 255 |
| Taylor, Steuben. (1824), Miscellaneous localities of minerals. American Journal of Science: s. 1, 7: 253-4. |
USA | |
| [var: Perthite] USGS Prof Paper 255 |
| Taylor, Steuben. (1824), Miscellaneous localities of minerals. American Journal of Science: s. 1, 7: 253-4. |