Malachite Facts

Malachite Facts

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Malachite Properties

Chemical Composition It is Copper Carbonate Hydroxide having the chemical formula as Cu2(CO3)(OH)2.
Colours Shall always be green. Green shades would vary between light to dark green.
Streak Light green, dark green, black
Refractive Index 1.65 – 1.91
Specific Gravity 3.7 to 3.9
Luster Vitreous, silky, dull
Solid State Opaque to translucent.
Crystal System Monoclinic
Hardness Varies between 3.5-4 Mohs.
Heat Sensitive Yes
Fractures Uneven to Sub-Conchoidal.
Bi-refringence 0.021
Luminescence None
Source Russia, Untied States, Mexico, Australia, Germany, Romania, Chile, United Kingdom, Zambia, Namibia, Zaire and South Africa.
Enhancement Occasionally done to improve the durability and colour.
Precautions Special care has to be taken. Avoid exposure to acids and excessive heat. Protect from sharp blows and scratches. Clean with a soft cloth. To be kept away from the water as well.
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