  Orthoclase.
Description from the source:
Orthoclase (K Al Si3 O8 mon.), San Gotthard, Tessin, Switzerland. Geminated crystals of the variety Adular. 5x4x3 cm; 25 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 30 September, 2008
Text Updated: 1 October, 2008
Price: Trade
Size: 2"
Composition: KAlSi3O8
|
| 
|
|
