Rock Identifier
Copper Ore (Chrysocolla/Malachite in host rock) (Hydrated copper phyllosilicate and copper carbonate hydroxide) — mineral
mineral

Copper Ore (Chrysocolla/Malachite in host rock)

Hydrated copper phyllosilicate and copper carbonate hydroxide

Hardness varies from 2 to 4 on the Mohs scale depending on the specific secondary copper minerals present; displays characteristic vibrant turquoise-blue to green coloration; vitreous to dull luster; opaque; uneven to conchoidal fracture.

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Physical properties

Hardness varies from 2 to 4 on the Mohs scale depending on the specific secondary copper minerals present; displays characteristic vibrant turquoise-blue to green coloration; vitreous to dull luster; opaque; uneven to conchoidal fracture.

Formation & geological history

Formed in the oxidized zones of copper ore deposits, typically through hydrothermal alteration and weathering of primary copper sulfides.

Uses & applications

Source of copper metal, ornamental stone, lapidary work, and mineral collecting.

Geological facts

Secondary copper minerals like chrysocolla and malachite are strong indicators of underlying primary copper ore bodies.

Field identification & locations

Readily identified in the field by its striking blue-green staining against a brownish-red or gray host rock. Common in major copper-producing regions worldwide.