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Aragonite
Aragonite

Malachite
Malachite



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Aragonite
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Malachite

Aragonite and Malachite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Dilute acid
-

Durability

-
-

Specific Gravity

2.93-2.963.25-4.10
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
Conchoidal, Uneven

Cleavage

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

Mohs Hardness

3.5-43.5-4
2 10
👆🏻

Chemical Composition

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

Aragonite and Malachite Chemical Formula

While comparing Aragonite and Malachite 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 Aragonite and Malachite chemical formula.

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

Aragonite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.