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: Cyan, blue, green, and brown; Luster: Vitreous to earthy; Crystal system: Orthorhombic / amorphous; Cleavage: None

Hardness: 2
Color: Cyan, blue, green, and brown
Luster: Vitreous to earthy

Identified August 2, 2026More mineral →

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Physical properties

Hardness: 2.5 to 3.5 on the Mohs scale; Color: Cyan, blue, green, and brown; Luster: Vitreous to earthy; Crystal system: Orthorhombic / amorphous; Cleavage: None

Formation & geological history

Forms in the oxidation zones of copper ore bodies, typically as secondary mineral encrustations, vein fillings, or rounded masses in arid to semi-arid environments.

Uses & applications

Popularly used as an ornamental stone, in lapidary arts, for beaded and cabochon jewelry, and as a collector's specimen.

Geological facts

Chrysocolla is often confused with turquoise due to its striking blue-green color, but it is significantly softer and forms in association with other copper minerals like malachite and azurite.

Field identification & locations

Can be identified by its vibrant teal or cyan color combined with a low hardness and association with copper deposits. Found globally, notably in the USA, Russia, Chile, and the Democratic Republic of the Congo.