Gahnite and Sodalite Physical Properties

Gahnite

Sodalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.622.15-2.40

1 7.18

1.5 Fracture

Conchoidal, Uneven

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Indistinct parting on [111]

Poor on {110}

1.7 Mohs Hardness

7.5-85-6

2 10

1.8 Chemical Composition

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

Na₈Al₆Si₆O₂₄Cl₂

Gahnite and Sodalite Chemical Formula

While comparing Gahnite and Sodalite 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 Gahnite and Sodalite chemical formula.

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

Compare Blue Gemstones

Gahnite Vs Indicolite Blue Tourmaline

Gahnite Vs Hydrogrossular

Gahnite Vs Howlite

Gahnite and Sodalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.