Sodalite and Hercynite Physical Properties

Sodalite

Hercynite

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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

2.15-2.404.39

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

ConchoidalGemdat.org, Uneven

1.6 Cleavage

Poor on {110}

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Sodalite and Hercynite Chemical Formula

While comparing Sodalite and Hercynite 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 Hercynite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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Sodalite and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 4.39 whereas that of Hercynite is 4.39.