Cassiterite and Topaz Physical Properties

Cassiterite

Topaz

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

6.86-7.033.49-3.57

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal, Irregular

Subconchoidal, Uneven, Conchoidal

Cleavage

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

[001] Perfect

Mohs Hardness

6-78

2 10

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Chemical Composition

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

Al₂SiO₄(F,OH)₂

Cassiterite and Topaz Chemical Formula

While comparing Cassiterite and Topaz 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 Topaz chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

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Cassiterite and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.