- Feldspar Var. Bytownite
- Miniature, 3.7 x 2.0 x 1.3 cm
- Dorado Mine, Casas Grandes, Chihuahua, Mexico
- Ex. Martin Zinn
A somewhat rounded, alluvial crystal of this rare gem feldspar variety - normally only seen as facet rough and almost never as a crystallized specimen! This is a rare exmaple of a bytownite crystal. It is gemmy and transparent in person.