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Malachite
Gemstone
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Malachite is a copper carbonate hydroxide mineral, with the formula Cu₂CO₃(OH)₂. This opaque, green-banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, ... Wikipedia
Color: Green
Chemical formula: Cu₂CO₃(OH)₂
Hardness (Mohs hardness scale): 3.5 – 4
Luster: Silky
Birefringence: δ = 0.254
Cleavage: Perfect on, fair on
Crystal class: Prismatic (2/m); (same H-M symbol)
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