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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