Anorthite and Apophyllite Physical Properties

Anorthite

Apophyllite

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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

2.772.30-2.50

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Perfect on (001)

1.7 Mohs Hardness

6-6.54.5-5

2 10

1.8 Chemical Composition

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

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Anorthite and Apophyllite Chemical Formula

While comparing Anorthite and Apophyllite 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 Apophyllite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Anorthite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.