Elbaite and Labradorite Physical Properties

Elbaite

Labradorite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.102.69-2.72

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

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

1.7 Mohs Hardness

76-6.5

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

(Na,Ca)_1-2Si_3-2O₈

Elbaite and Labradorite Chemical Formula

While comparing Elbaite 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 Elbaite and Labradorite chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Elbaite and Labradorite Specific Gravity

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