mineral

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

AI-generated identification · may be incorrect

Hardness: 2 to 4 on the Mohs scale. Color: Green, blue-green, or cyan, often mottled with brown or black matrix. Luster: Vitreous to earthy. Crystal structure: Orthorhombic, though rarely found as distinct crystals; usually found as amorphous masses, crusts, or vein fillings. Cleavage: None.…

Hardness: 2 to 4 on the Mohs scale
Luster: Vitreous to earthy

Identified August 2, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary mineral in the oxidized zones of copper ore bodies, typically in arid environments where copper-bearing solutions interact with silica-rich water.

Uses & applications

Frequently used as a gemstone, carved into ornamental objects, or made into cabochons for jewelry, though its softness requires protective settings.

Geological facts

Chrysocolla's name is derived from the Greek words "chrysos" (gold) and "kolla" (glue), referencing its historical use in soldering gold.

Field identification & locations

Easily identified by its vibrant blue-green color and relative softness. Commonly found in copper-rich mining regions such as the southwestern United States, Chile, Peru, and Russia.