Iolite and Omphacite Physical Properties

Iolite

Omphacite

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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

2.6-2.73.16-3.43

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

3,1

{110} Good, {110} Good

1.7 Mohs Hardness

7-7.55-6

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Omphacite Chemical Formula

While comparing Iolite and Omphacite 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 Iolite and Omphacite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

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Iolite and Omphacite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.