Sodalite and Vivianite Physical Properties

Sodalite

Vivianite

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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

2.15-2.402.64-2.70

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

(e.g. graphite).

1.6 Cleavage

Poor on {110}

{010} Perfect

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Sodalite and Vivianite Chemical Formula

While comparing Sodalite and Vivianite 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 Vivianite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Sodalite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.