Anorthite and Neptunite Physical Properties

Anorthite

Neptunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.773.19-3.23

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

Perfect [001] good [010] poor [110]

{110} good

1.7 Mohs Hardness

6-6.55-6

2 10

1.8 Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , 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.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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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 and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.