Anorthite and Apophyllite KF Physical Properties

Anorthite

Apophyllite KF

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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

2.772.33-2.37

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

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

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

6-6.54.5-5

2 10

1.8 Chemical Composition

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

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Anorthite and Apophyllite KF Chemical Formula

While comparing Anorthite and Apophyllite KF 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 KF chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Anorthite and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.