Cassiterite
A brown to black, very dense and resistant tin oxide, the main tin ore, mined since the Bronze Age.
Composition
SnO2; tetragonal; 78.8% Sn.
Sources
In the atlas
- Mount Cer Serbia
- Llallagua Bolivia
- Cornwall tin district United Kingdom
- Black Hills tin belt (South Dakota) United States
- Cínovec-Krupka (eastern Erzgebirge) Czechia