Albite and Labradorite Physical Properties

Albite

Labradorite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.60-2.652.69-2.72

1 7.18

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Fracture

Uneven, Conchoidal

Cleavage

Perfect on {001}, very good on {010}, imperfect on {110}

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

Mohs Hardness

6-6.56-6.5

2 10

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Chemical Composition

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

(Na,Ca)_1-2Si_3-2O₈

Albite and Labradorite Chemical Formula

While comparing Albite and Labradorite 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 Albite and Labradorite chemical formula.

Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Albite and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Albite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Albite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Albite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.