Steatite and Sodalite Physical Properties

Steatite

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

2.20-2.802.15-2.40

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Not Available

Poor on {110}

1.7 Mohs Hardness

Not Available5-6

2 10

1.8 Chemical Composition

Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

Na₈Al₆Si₆O₂₄Cl₂

Steatite and Sodalite Chemical Formula

While comparing Steatite 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 Steatite and Sodalite chemical formula.

Chemical formula of Steatite- Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Steatite and Sodalite Specific Gravity

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