Labradorite and Cordierite Physical Properties

Labradorite

Cordierite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.69-2.722.57-2.66

1 7.18

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Fracture

Uneven, Conchoidal

Subconchoidal, Conchoidal

Cleavage

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

Fair on {100}, poor on {001} and {010}

Mohs Hardness

6-6.57-7.5

2 10

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Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

Mg2Al4Si5O18

Labradorite and Cordierite Chemical Formula

While comparing Labradorite and Cordierite 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 Cordierite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Cordierite- Mg2Al4Si5O18

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Labradorite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.