Geology Home Page
Roger Weller, geology instructor
Chemical Group: sulfate
Chemical Formula: CuSO4.5H2O
Color: Berlin-blue to sky-blue Streak: uncolored
Specific Gravity: 2.12 to 2.30
Tenacity: brittle Taste: metallic and nauseous
Transparency: subtransparent to subtranslucent
Crystals are often flattened.
Also occurs massive, stalactitic, reniform or fibrous
Mineral Associations: deposited from mine waters
Uses: Copper ore
USA: Arizona, Nevada, New Mexico, Montana, Tennessee
World-Wide: Slovakia, Spain, Chile, Bolivia
Toxicity: when-swallowed- poisonous when inhaled- poisonous
Additional Information: Chalcanthite is also known as blue vitriol.