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Anorthite
Anorthite

Neptunite
Neptunite



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Anorthite
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Neptunite

Anorthite and Neptunite Physical Properties

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)
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Anorthite and Neptunite Chemical Formula

While comparing Anorthite and Neptunite 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 Neptunite chemical formula.

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Anorthite and Neptunite Specific Gravity

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