mineral

Chrysocolla

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

Hardness: 2 to 4 on the Mohs scale. Color: Green, blue-green, or cyan, often mottled with brown or black matrix. Luster: Vitreous to earthy. Crystal structure: Orthorhombic, though rarely found as distinct crystals; usually found as amorphous masses, crusts, or vein fillings. Cleavage: None.…

Hardness: 2 to 4 on the Mohs scale
Luster: Vitreous to earthy

Identified August 2, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary mineral in the oxidized zones of copper ore bodies, typically in arid environments where copper-bearing solutions interact with silica-rich water.

Uses & applications

Frequently used as a gemstone, carved into ornamental objects, or made into cabochons for jewelry, though its softness requires protective settings.

Geological facts

Chrysocolla's name is derived from the Greek words "chrysos" (gold) and "kolla" (glue), referencing its historical use in soldering gold.

Field identification & locations

Easily identified by its vibrant blue-green color and relative softness. Commonly found in copper-rich mining regions such as the southwestern United States, Chile, Peru, and Russia.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Soil with Mineral Detritus and Quartz Fragments

Regolith / Silicate Mineral Aggregate

sedimentary

Limonite / Goethite (Iron Ore Mineral nodule)

FeO(OH)·nH2O / FeO(OH)

mineral

Septarian Pebble

Septarian nodule / Concretion

sedimentary

Schist

Metamorphic

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

mineral