mineral

Chrysocolla-bearing copper ore

Chrysocolla (hydrated copper aluminum silicate), likely with malachite/azurite and copper sulfides

AI-generated identification · may be incorrect

Blue-green botryoidal patches in a dull earthy to submetallic matrix; chrysocolla is amorphous, Mohs 2.5–3.5, with no cleavage and low-to-moderate specific gravity (~2.0–2.4). The specimen may contain darker metallic copper minerals, but an exact identification requires testing.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary copper mineral in oxidized zones above copper sulfide deposits, commonly through groundwater alteration; usually Cenozoic to older, depending on the host deposit.

Uses & applications

Used as an ornamental stone and lapidary material when attractive; primarily collected as a copper-mineral specimen and occasionally processed into cabochons.

Geological facts

Chrysocolla commonly occurs with malachite, azurite, cuprite, limonite, and native copper. Its blue-green color is caused by hydrated copper-bearing mineral structures.

Field identification & locations

Identify by blue-green earthy coatings, association with copper minerals, and possible green streak; it is softer and less crystalline than turquoise. Common localities include Arizona, Nevada, Chile, Peru, the Democratic Republic of Congo, and Australia.