Cassiterite and Sylvite Physical Properties

Cassiterite

Sylvite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Soluble

Durability

Specific Gravity

6.86-7.031.993

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal, Irregular

Uneven

Cleavage

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

Perfect on [100], [010], [001]

Mohs Hardness

6-72.5

2 10

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Chemical Composition

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

KCl

Cassiterite and Sylvite Chemical Formula

While comparing Cassiterite and Sylvite 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 Sylvite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sylvite- KCl

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Cassiterite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 1.993 whereas that of Sylvite is 1.993.