Topaz and Cassiterite Physical Properties

Topaz

Cassiterite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

3.49-3.576.86-7.03

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal

Subconchoidal, Uneven, Conchoidal, Irregular

Cleavage

[001] Perfect

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

Mohs Hardness

86-7

2 10

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Chemical Composition

Al₂SiO₄(F,OH)₂

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

Topaz and Cassiterite Chemical Formula

While comparing Topaz and Cassiterite 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 Topaz and Cassiterite chemical formula.

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

Compare Gems for Sagittarius

Topaz Vs Petoskey Stone

Topaz Vs Pietersite

Topaz Vs Quartz Smoky

Topaz and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.