Topaz from selected localities.
USA | |
| Minerals of Colorado (1997) E.B. Eckel; Richard Fretterd and Jean Cowman (2016) Exploring a topaz-bearing Pikes Peak pegmatite. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado |
C.R. Carnein collection | |
Mason, A. (1976) The world of Rocks and Minerals. New York, N.Y., Larousse & Co., 108 pages.; Eckel, E.B. (1997) Minerals of Colorado. | |
D.E. Keale, 2002 Denver Annual Meeting (Oct. 27-30, 2002), Session N° 158, Paper 158-6 : "Mineralogy and Provenance of Clay Minerals in Miarolitic Cavities of the Pikes Peak Batholith, Colorado". | |
Adam Sotomayor | |
| Minerals of Colorado (1997) E.B. Eckel |
Agnus Dei claim, Cameron Cone, Crystal Park, El Paso County, Colorado, USA