Periclase and Sodalite Physical Properties

Periclase

Sodalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.92.15-2.40

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

Poor on {110}

1.7 Mohs Hardness

5.5-65-6

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Na₈Al₆Si₆O₂₄Cl₂

Periclase and Sodalite Chemical Formula

While comparing Periclase 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 Periclase and Sodalite chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Periclase and Sodalite Specific Gravity

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