Verdelite and Cassiterite Physical Properties

Verdelite

Cassiterite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

2.90-3.406.86-7.03

1 7.18

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Fracture

Conchoidal

Subconchoidal, Uneven, Conchoidal, Irregular

Cleavage

Indiscernible

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

Mohs Hardness

7-7.56-7

2 10

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Chemical Composition

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.

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

Verdelite and Cassiterite Chemical Formula

While comparing Verdelite 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 Verdelite and Cassiterite chemical formula.

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

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Verdelite and Cassiterite Specific Gravity

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