Sodalite and Rossmanite Physical Properties

Sodalite

Rossmanite

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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

2.15-2.403

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

Brittle, Metallic

1.6 Cleavage

Poor on {110}

None

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Sodalite and Rossmanite Chemical Formula

While comparing Sodalite and Rossmanite 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 Rossmanite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Sodalite and Rossmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Rossmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Rossmanite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 3 whereas that of Rossmanite is 3.