Chlorastrolite and Sodalite Physical Properties

Chlorastrolite

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

3.1-3.52.15-2.40

1 7.18

1.5 Fracture

Granular

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Not Available

Poor on {110}

1.7 Mohs Hardness

5-65-6

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)

Na₈Al₆Si₆O₂₄Cl₂

Chlorastrolite and Sodalite Chemical Formula

While comparing Chlorastrolite 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 Chlorastrolite and Sodalite chemical formula.

Chemical formula of Chlorastrolite- Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Chlorastrolite and Sodalite Specific Gravity

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