Omphacite and Anorthite Physical Properties

Omphacite

Anorthite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.432.77

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

{110} Good, {110} Good

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

1.7 Mohs Hardness

5-66-6.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

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

Omphacite and Anorthite Chemical Formula

While comparing Omphacite 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 Omphacite and Anorthite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Omphacite and Anorthite Specific Gravity

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