Phlogopite and Sodalite Physical Properties

Phlogopite

Sodalite

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1 Physical Properties

1.1 Tenacity

Tough

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.78-2.852.15-2.40

1 7.18

1.5 Fracture

None, Uneven

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

Perfect basal (001)

Poor on {110}

1.7 Mohs Hardness

2-2.55-6

2 10

1.8 Chemical Composition

Not Available

Na₈Al₆Si₆O₂₄Cl₂

Phlogopite and Sodalite Chemical Formula

While comparing Phlogopite 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 Phlogopite and Sodalite chemical formula.

Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Phlogopite and Sodalite Specific Gravity

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