Sodalite and Poldervaartite Physical Properties

Sodalite

Poldervaartite

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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

2.15-2.402.91

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

Handbook of mineralogy (2001)

1.6 Cleavage

Poor on {110}

None

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Sodalite and Poldervaartite Chemical Formula

While comparing Sodalite and Poldervaartite 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 Poldervaartite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

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Sodalite and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 2.91 whereas that of Poldervaartite is 2.91.