Bertrandite and Chiastolite Physical Properties

Bertrandite

Chiastolite

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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

2.59-2.603.00-3.15

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

6-75-5.5

2 10

1.8 Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

Bertrandite and Chiastolite Chemical Formula

While comparing Bertrandite and Chiastolite 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 Chiastolite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

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Bertrandite and Chiastolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Chiastolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Chiastolite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 3.00-3.15 whereas that of Chiastolite is 3.00-3.15.