Rossmanite and Sodalite Physical Properties

Rossmanite

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

32.15-2.40

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

None

Poor on {110}

1.7 Mohs Hardness

Not Available5-6

2 10

1.8 Chemical Composition

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

Na₈Al₆Si₆O₂₄Cl₂

Rossmanite and Sodalite Chemical Formula

While comparing Rossmanite 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 Rossmanite and Sodalite chemical formula.

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

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Rossmanite and Sodalite Specific Gravity

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