mineral
Malachite with Chrysocolla
Copper carbonate hydroxide (Cu2CO3(OH)2) and Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
Hardness: 3.5-4 (Malachite) to 2.5-7 (Chrysocolla), Color: Bright green and cyan/teal, Luster: Silky to dull, Crystal Structure: Monoclinic/Orthorhombic, Cleavage: Perfect in one direction for Malachite.
- Hardness
- 3
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Physical properties
Hardness: 3.5-4 (Malachite) to 2.5-7 (Chrysocolla), Color: Bright green and cyan/teal, Luster: Silky to dull, Crystal Structure: Monoclinic/Orthorhombic, Cleavage: Perfect in one direction for Malachite.
Formation & geological history
Formed in the oxidation zones of copper ore deposits where carbonated water interacts with copper minerals or through rainwater leaching copper into silica-rich environments.
Uses & applications
Informal gemstone, lapidary arts, mineral collecting, and historical pigment production.
Geological facts
Malachite was used as a mineral pigment in green paints from antiquity until about 1800. It is often found associated with Azurite and Chrysocolla.
Field identification & locations
Identify by the distinct vibrant green banding (Malachite) mixed with blue-green hues (Chrysocolla). Commonly found in the Democratic Republic of the Congo, Arizona (USA), and Russia.
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mineral