Anorthite and Albite Physical Properties

Anorthite

Albite

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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

2.772.60-2.65

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

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

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

Anorthite and Albite Chemical Formula

While comparing Anorthite and Albite 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 Albite chemical formula.

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

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Anorthite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Albite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.60-2.65 whereas that of Albite is 2.60-2.65.