mineral
Copper Ore (likely Malachite or Chrysocolla staining)
Copper Secondary Mineral (e.g., Cu2CO3(OH)2)
AI-generated identification · may be incorrectHardness: 3.5-4.0 (Mohs scale), Color: Green to bluish-green, Luster: Dull to earthy/waxy, Crystal Structure: Monoclinic or amorphous, Specific Gravity: 3.6-4.0
- Hardness
- 3
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Physical properties
Hardness: 3.5-4.0 (Mohs scale), Color: Green to bluish-green, Luster: Dull to earthy/waxy, Crystal Structure: Monoclinic or amorphous, Specific Gravity: 3.6-4.0
Formation & geological history
Formed in the oxidation zones of copper deposits where copper-rich fluids react with carbonate minerals or silica. Often found in arid environments.
Uses & applications
Industrial source of copper metal, pigments, and semi-precious gemstones for jewelry and lapidary work.
Geological facts
Copper minerals like this have been used as eye makeup and pigments since Ancient Egypt. They serve as a primary indicator for miners searching for deeper copper deposits.
Field identification & locations
Identify in the field by the distinct bright green or blue-green color (patina) often coating darker host rocks. Commonly found in Arizona (USA), Chile, and the Congo.
