Cassiterite and Rubellite Physical Properties

Cassiterite

Rubellite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

6.86-7.033.01-3.06

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal, Irregular

Conchoidal

Cleavage

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

Indiscernible

Mohs Hardness

6-77-7.5

2 10

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Chemical Composition

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

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Cassiterite and Rubellite Chemical Formula

While comparing Cassiterite and Rubellite 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 Rubellite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Compare Red Gemstones

Cassiterite Vs Chrome-Chalcedony

Cassiterite Vs Cinnabar

Cassiterite Vs Crocoite

Cassiterite and Rubellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.