Bertrandite and Labradorite Physical Properties

Bertrandite

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

2.59-2.602.69-2.72

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

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

1.7 Mohs Hardness

6-76-6.5

2 10

1.8 Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

(Na,Ca)_1-2Si_3-2O₈

Bertrandite and Labradorite Chemical Formula

While comparing Bertrandite 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 Bertrandite and Labradorite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Bertrandite and Labradorite Specific Gravity

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