mineral

Chrysocolla

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

Hardness: 2.5-3.5 (can be higher if silicated); Color: Cyan, blue-green; Luster: Vitreous to earthy; Crystal Structure: Amorphous (monoclinic); Cleavage: None; Specific Gravity: 2.0-2.4

Hardness: 2
Color: Cyan, blue-green
Luster: Vitreous to earthy

Identified June 15, 2026More mineral →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 2.5-3.5 (can be higher if silicated); Color: Cyan, blue-green; Luster: Vitreous to earthy; Crystal Structure: Amorphous (monoclinic); Cleavage: None; Specific Gravity: 2.0-2.4

Formation & geological history

Formed in the oxidation zones of copper ore bodies where copper-bearing solutions react with silica-rich water. It is a secondary mineral typically found in arid regions.

Uses & applications

Used primarily as a gemstone for jewelry (cabochons and beads) and as a minor ore of copper. It is highly valued by mineral collectors for its vibrant color.

Geological facts

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

Field identification & locations

Identify by its distinctive blue-green color and its tendency to stick to the tongue due to its porous nature. Commonly found in Arizona (USA), Chile, and the DRC.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral