Anorthite and Anorthoclase Physical Properties

Anorthite

Anorthoclase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.772.56-2.62

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

From the Greek for oblique and fracture, descriptive of the cleavage

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

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

(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Anorthite and Anorthoclase Chemical Formula

While comparing Anorthite and Anorthoclase 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 Anorthoclase chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anorthoclase- (Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Anorthite and Anorthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.