mineral

Chrysocolla (with Quartz and Azurite)

Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]

Hardness: 2.5-7.0 (variable with silica content); Color: Cyan, blue, green; Luster: Vitreous to dull; Crystal System: Orthorhombic; Specific Gravity: 2.0-2.4

Hardness: 2
Color: Cyan, blue, green
Luster: Vitreous to dull

Identified May 1, 2026More mineral →

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Physical properties

Hardness: 2.5-7.0 (variable with silica content); Color: Cyan, blue, green; Luster: Vitreous to dull; Crystal System: Orthorhombic; Specific Gravity: 2.0-2.4

Formation & geological history

A secondary mineral formed in the oxidation zones of copper ore bodies. It is often found associated with quartz, malachite, azurite, and cuprite in arid climates.

Uses & applications

Primarily used as a minor ore of copper, as a semi-precious gemstone in jewelry, and highly valued by mineral collectors for its vibrant colors.

Geological facts

The name comes from the Greek 'chrysos' (gold) and 'kolla' (glue), referring to the name of the material used to solder gold. It was first used by Theophrastus in 315 BCE.

Field identification & locations

Identify by its bright blue-green color and lack of a reactive 'fizz' with acid (unlike Malachite). Commonly found in Arizona (USA), Chile, and the Democratic Republic of Congo.

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