Feldspar Group from
USA | |
| [var. Perthite] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Wallace R.Griffitts and Jerry C.Olson (1953) Mica Deposits of the Southeastern Piedmont:USGS Paper 248-D |
| [var. Sunstone] Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
[var. Perthite] Rocks & Min.:60:165. | |
[var. Perthite] Rocks & Min.:60:165. | |
[var. Sunstone] D. Grier, 1994 | |
| Wayne Gilmore |