Albite and Anorthite Physical Properties

Albite

Anorthite

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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

2.60-2.652.77

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {001}, very good on {010}, imperfect on {110}

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

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Albite and Anorthite Chemical Formula

While comparing Albite 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 Albite and Anorthite chemical formula.

Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Albite and Anorthite Specific Gravity

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