Cassiterite and Iolite Physical Properties

Cassiterite

Iolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.86-7.032.6-2.7

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

Not Available

1.6 Cleavage

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

3,1

1.7 Mohs Hardness

6-77-7.5

2 10

1.8 Chemical Composition

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

Mg₂Al₄Si₅O₁₈

Cassiterite and Iolite Chemical Formula

While comparing Cassiterite and Iolite 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 Iolite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Cassiterite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.