mineral

Chrysocolla in Matrix

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

Hardness: 2 to 4 on the Mohs scale. Color: Bright blue, green, and turquoise. Luster: Vitreous to dull or earthy. Crystal structure: Orthorhombic/Amorphous, typically occurs as botryoidal masses, crusts, or vein fillings. Specific gravity: 2.0 to 2.4.

Hardness: 2 to 4 on the Mohs scale
Color: Bright blue, green, and turquoise
Luster: Vitreous to dull or earthy

Identified August 1, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary mineral in the oxidation zones of copper ore bodies, typically associated with malachite, azurite, and quartz, created through weathering and groundwater interaction with primary copper sulfides.

Uses & applications

Used primarily as a gemstone for cabochons, inlay work, and ornamental carvings, as well as a minor ore of copper and a popular specimen for mineral collectors.

Geological facts

Chrysocolla gets its vivid blue-green color from its high copper content. It was famously used by the ancient Greeks and Romans for soldering gold and as a pigment in paintings.

Field identification & locations

Easily identified by its distinctive robin's egg blue or bright turquoise coloration on a host rock matrix, combined with a relatively soft feel. Found worldwide, with notable deposits in 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)

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Schist

Metamorphic

Septarian Pebble

Septarian nodule / Concretion

sedimentary

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

mineral