Labradorite and Calcite Physical Properties

Labradorite

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.722.67-2.73

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

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

1.6 Cleavage

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

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

6-6.53

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

CaCO 3Ulrich Henn and Claudio C.

Labradorite and Calcite Chemical Formula

While comparing Labradorite and Calcite 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 Calcite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Labradorite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.