Labradorite and Aragonite Physical Properties

Labradorite

Aragonite

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Physical Properties

Tenacity

Brittle

Solubility

Dilute acid

Durability

Specific Gravity

2.69-2.722.93-2.96

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}

Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

6-6.53.5-4

2 10

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Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Labradorite and Aragonite Chemical Formula

While comparing Labradorite and Aragonite 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 Aragonite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Labradorite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.