Aragonite and Labradorite Physical Properties

Aragonite

Labradorite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Dilute acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.962.69-2.72

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

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

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

1.7 Mohs Hardness

3.5-46-6.5

2 10

1.8 Chemical Composition

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

(Na,Ca)_1-2Si_3-2O₈

Aragonite and Labradorite Chemical Formula

While comparing Aragonite 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 Aragonite and Labradorite chemical formula.

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

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Aragonite and Labradorite Specific Gravity

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