Bertrandite and Anorthite Physical Properties

Bertrandite

Anorthite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.59-2.602.77

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

Perfect [001] good [010] poor [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)

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Bertrandite and Anorthite Chemical Formula

While comparing Bertrandite and Anorthite 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 Anorthite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Bertrandite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 2.77 whereas that of Anorthite is 2.77.