Labradorite and Colemanite Physical Properties

Labradorite

Colemanite

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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

2.69-2.722.40-2.42

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

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

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

6-6.54.5

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Labradorite and Colemanite Chemical Formula

While comparing Labradorite and Colemanite 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 Colemanite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Labradorite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.