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Annabergite
Annabergite

Anorthite
Anorthite



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Annabergite
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Annabergite and Anorthite Physical Properties

1 Physical Properties
1.1 Tenacity
Sectile
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.07
2.77
1.5 Fracture
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Perfect on {010}, indistinct on {100} and {102}
Perfect [001] good [010] poor [110]
1.7 Mohs Hardness
2
6-6.5
1.8 Chemical Composition
Ni3(AsO4)2•8(H2O)
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Annabergite and Anorthite Chemical Formula

While comparing Annabergite and Anorthite 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 Annabergite and Anorthite chemical formula.

  • Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
  • Chemical formula of Anorthite- CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Annabergite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 2.77 whereas that of Anorthite is 2.77.