Malachite

The malachite is a part of the family of anhydres carbonates, it is colored in green by the copper under shape Cu2 +.

Color: dark green in Green
Hardness: 3 - 4
Refractive index: 1,83 - 1,87
Density: 3,75 - 4,05
Chemical composition: Cu2+2 ( CO3) (OH) 2
Crystalline structure: monoclinic
Luster: glassy in Matt (Massive); Adamantine (Gemstone)
Origin: France, Romania, Democratic Republic of the Congo, Russia, Etat-Unis, etc.

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