Cassiterite from La Fregeneda, Spain

Cassiterite from La Fregeneda, Salamanca, Castile and Leon, Spain

Cassiterite is a tin ore which really helped to shape the modern world, contributing to technology that changed the course of history.

These pieces are from a small region of Spain with many pegmatite deposits in. They are a relatively low grade ore consisting of Quartz with poorly formed masses of Cassiterite.