Shigaite and Sodalite Physical Properties

Shigaite

Sodalite

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.322.15-2.40

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Perfect on {0001}

Poor on {110}

1.7 Mohs Hardness

25-6

2 10

1.8 Chemical Composition

Not Available

Na₈Al₆Si₆O₂₄Cl₂

Shigaite and Sodalite Chemical Formula

While comparing Shigaite 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 Shigaite and Sodalite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Shigaite and Sodalite Specific Gravity

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