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Aragonite
Aragonite

Annabergite
Annabergite



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Aragonite
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Annabergite

Aragonite and Annabergite Physical Properties

Physical Properties

Tenacity

Brittle
Sectile

Solubility

Dilute acid
-

Durability

-
-

Specific Gravity

2.93-2.963.07
1 7.18
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Fracture

Subconchoidal, Conchoidal
-

Cleavage

Distinct on {010}, imperfect {110} and {011}
Perfect on {010}, indistinct on {100} and {102}

Mohs Hardness

3.5-42
2 10
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Chemical Composition

CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ni3(AsO4)2•8(H2O)

Aragonite and Annabergite Chemical Formula

While comparing Aragonite and Annabergite 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 Annabergite chemical formula.

  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

Aragonite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 3.07 whereas that of Annabergite is 3.07.