Microcline from selected localities.
USA | |
| Januzzi, Ronald E. (1976), Mineral Localities Connecticut and Southeastern New York State. The Mineralogical Press, Danbury, Connecticut. |
| Barton, William R. and Carl. E. Goldsmith. (1968), New England Beryllium Investigations. US Bureau Mines Report of Investigations 7070. |
Januzzi, Ronald E. (1994), Mineral Data Book - Western Connecticut and Environs. The Mineralogical Press, Danbury, Connecticut. | |
| Januzzi, Ronald E. (1976): Mineral Localities of Connecticut and Southeastern New York State. The Mineralogical Press, Danbury, Connecticut.; Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 396. |
| Crowley (1968) |
Notes by Jeremy Zolan | |
| Cruson, Daniel. (1991), Feldspar Quarries and The Mining History of Newtown. Triassic Valley Bulletin: August/September. |
Cruson, Daniel. (1991), Feldspar Quarries and The Mining History of Newtown. Triassic Valley Bulletin: August/September. |
Biermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield County, Connecticut, USA