Omphacite and Variscite Physical Properties

Omphacite

Variscite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.432.42-2.58

1 7.18

1.5 Fracture

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

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

{110} Good, {110} Good

[010] perfect

1.7 Mohs Hardness

5-64-5

2 10

1.8 Chemical Composition

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

AlPO₄ · 2(H₂O)

Omphacite and Variscite Chemical Formula

While comparing Omphacite and Variscite 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 Variscite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Omphacite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.