Sodalite and Brucite Physical Properties

Sodalite

Brucite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.15-2.402.39

1 7.18

1.5 Fracture

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

Irregular

1.6 Cleavage

Poor on {110}

Perfect on {0001}

1.7 Mohs Hardness

5-62.5

2 10

1.8 Chemical Composition

Na₈Al₆Si₆O₂₄Cl₂

Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Sodalite and Brucite Chemical Formula

While comparing Sodalite and Brucite 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 Brucite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂
Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sodalite and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Brucite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 2.39 whereas that of Brucite is 2.39.