Zinnwaldite 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 |
Rocks & Minerals 76:298-325 |