Scapolite and Sodalite Physical Properties

Scapolite

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

2.58-2.742.15-2.40

1 7.18

1.5 Fracture

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

{100} Distinct, {110} Distinct

Poor on {110}

1.7 Mohs Hardness

5.5-65-6

2 10

1.8 Chemical Composition

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

Na₈Al₆Si₆O₂₄Cl₂

Scapolite and Sodalite Chemical Formula

While comparing Scapolite 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 Scapolite and Sodalite chemical formula.

Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Scapolite and Sodalite Specific Gravity

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