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Malachite
Malachite

Aragonite
Aragonite



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Malachite
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Aragonite

Malachite and Aragonite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Dilute acid

Durability

-
-

Specific Gravity

3.25-4.102.93-2.96
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Subconchoidal, Conchoidal

Cleavage

Perfect on { 2 01} fair on {010}
Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

3.5-43.5-4
2 10
👆🏻

Chemical Composition

Cu2CO3(OH)2
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Malachite and Aragonite Chemical Formula

While comparing Malachite and Aragonite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Malachite and Aragonite chemical formula.

  • Chemical formula of Malachite- Cu2CO3(OH)2
  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Malachite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.