mineral

Chrysocolla (with Hematite/Iron Oxides)

Chrysocolla: (Cu, Al)2H2Si2O5(OH)4 · nH2O

Hardness: 2-4 (Mohs), Color: Cyan-green or turquoise, Luster: Vitreous to earthy, Crystal Structure: Orthorhombic (usually cryptocrystalline), Specific Gravity: 2.0-2.4

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 2-4 (Mohs), Color: Cyan-green or turquoise, Luster: Vitreous to earthy, Crystal Structure: Orthorhombic (usually cryptocrystalline), Specific Gravity: 2.0-2.4

Formation & geological history

Secondary mineral formed in the oxidation zones of copper ore bodies. It occurs as a result of water leaching copper from primary sulfides and reacting with silica.

Uses & applications

Primarily used as a minor ore of copper, as a gemstone for jewelry (cabochons), and as a popular collector's specimen due to its vivid color.

Geological facts

Chrysocolla's name comes from the Greek words 'chrysos' (gold) and 'kolla' (glue), referring to its ancient use as a flux for soldering gold. It is often confused with turquoise but is generally softer.

Field identification & locations

Identify in the field by its distinct blue-green color associated with reddish-brown iron staining or copper-rich environments. Common in arid regions like Arizona, Chile, and the Democratic Republic of Congo.

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Mineral/Rock

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Metamorphic Rock

Green Apatite on Albite

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mineral