Out of stock

Perthite is a combination of two different feldspars that form together, typically a sodium rich and a potassium rich member. This choice specimen has a main crystal that is 3.5cm and doubly terminated. Many smaller sister crystals make up a highly aesthetic hand sized specimen. Ex Ken Roberts collection

Locality: Dogtooth Peak, Fresno County California

Composition: potassium-rich alkali feldspar and sodic alkali feldspar

Dimensions: 7 × 5.5 × 3.5 cm
SKU: Geo-3561 Categories: , , Tags: ,
Dimensions: 7 × 5.5 × 3.5 cm