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Anorthite
Anorthite

Gahnite
Gahnite



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Anorthite
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Gahnite

Anorthite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.77
Uneven
Perfect [001] good [010] poor [110]
6-6.5
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Anorthite and Gahnite Chemical Formula

While comparing Anorthite and Gahnite 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 Anorthite and Gahnite chemical formula.

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Anorthite and Gahnite Specific Gravity

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