Sodalite and Gahnite Physical Properties

Sodalite

Gahnite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.15-2.404.00-4.62

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

Conchoidal, Uneven

1.6 Cleavage

Poor on {110}

Indistinct parting on [111]

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Sodalite and Gahnite Chemical Formula

While comparing Sodalite and Gahnite 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 Sodalite and Gahnite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sodalite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.