Bertrandite and Apophyllite Physical Properties

Bertrandite

Apophyllite

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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

2.59-2.602.30-2.50

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Perfect on (001)

1.7 Mohs Hardness

6-74.5-5

2 10

1.8 Chemical Composition

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

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Bertrandite and Apophyllite Chemical Formula

While comparing Bertrandite and Apophyllite 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 Apophyllite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Bertrandite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.