Labradorite and Bytownite Physical Properties

Labradorite

Bytownite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.69-2.722.72-2.75

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

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

Perfect on [001], good on [010], imperfect on [110]

Mohs Hardness

6-6.56-6.5

2 10

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Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Labradorite and Bytownite Chemical Formula

While comparing Labradorite and Bytownite 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 Labradorite and Bytownite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Labradorite and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.