mineral

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)

AI-generated identification · may be incorrect

Hardness: 2.5-3.5 (often harder if mixed with quartz); Color: Cyan, turquoise, or greenish-blue; Luster: Vitreous to earthy; Crystal Structure: Amorphous/Orthorhombic; Specific Gravity: 2.0-2.4

Hardness: 2
Color: Cyan, turquoise, or greenish-blue
Luster: Vitreous to earthy

Identified June 30, 2026More mineral →

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Physical properties

Hardness: 2.5-3.5 (often harder if mixed with quartz); Color: Cyan, turquoise, or greenish-blue; Luster: Vitreous to earthy; Crystal Structure: Amorphous/Orthorhombic; Specific Gravity: 2.0-2.4

Formation & geological history

Secondary mineral formed in the oxidation zones of copper ore bodies where copper minerals are altered by silica-rich waters. Often found in arid regions.

Uses & applications

Primarily used as a minor copper ore, for ornamental carvings, semi-precious gemstones in jewelry, and as a collector's specimen.

Geological facts

Chrysocolla is often confused with turquoise because of its color. It is a 'hydrated copper phyllosilicate' and is frequently found intergrown with minerals like quartz, malachite, and azurite.

Field identification & locations

Identified by its distinctive blue-green color and its tendency to stick to the tongue due to its porous nature. It is common in Southwestern USA, Chile, Congo, and Russia. Collectors look for high color saturation and translucency.