mineral

Chrysocolla

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

AI-generated identification · may be incorrect

Hardness: 2.5 to 3.5 on the Mohs scale. Color: Blue-green, cyan, turquoise, sometimes brown or black. Luster: Vitreous, earthy, or waxy. Crystal structure: Orthorhombic (often cryptocrystalline or amorphous). Cleavage: None. Specific gravity: 2.0 to 2.4.

Hardness: 2
Color: Blue-green, cyan, turquoise, sometimes brown or black
Luster: Vitreous, earthy, or waxy

Identified August 7, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary mineral in the oxidation zones of copper ore bodies, typically in arid environments through the alteration of copper-bearing silicates and oxides.

Uses & applications

Used primarily as an ornamental stone, in lapidary arts for cabochons and beads, and as a collector's specimen.

Geological facts

Its name comes from the Greek words 'chrysos' (gold) and 'kolla' (glue), referencing its historical use in soldering gold.

Field identification & locations

Identified by its vivid blue-green coloration and relatively low hardness. Commonly found in copper-rich mining regions such as the Southwestern United States, Chile, Peru, and Russia.