Hercynite and Sodalite Physical Properties

Hercynite

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

4.392.15-2.40

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

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

Poor on {110}

1.7 Mohs Hardness

7.5-85-6

2 10

1.8 Chemical Composition

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

Na₈Al₆Si₆O₂₄Cl₂

Hercynite and Sodalite Chemical Formula

While comparing Hercynite 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 Hercynite and Sodalite chemical formula.

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

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Hercynite and Sodalite Specific Gravity

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