Cassiterite and Bertrandite Physical Properties

Cassiterite

Bertrandite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

6.86-7.032.59-2.60

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal, Irregular

Cleavage

{100} imperfect, {110} indistinct; partings on {111} or {011}

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

Mohs Hardness

6-76-7

2 10

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Chemical Composition

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Cassiterite and Bertrandite Chemical Formula

While comparing Cassiterite and Bertrandite 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 Cassiterite and Bertrandite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Cassiterite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.