Dumortierite and Cassiterite Physical Properties

Dumortierite

Cassiterite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

3.26-3.416.86-7.03

1 7.18

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Fracture

Fibrous, ConchoidalWalter Schumann

Subconchoidal, Uneven, Conchoidal, Irregular

Cleavage

Distinct on {100}, poor on {110}; parting on {001}

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

Mohs Hardness

7-8.56-7

2 10

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Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Dumortierite and Cassiterite Chemical Formula

While comparing Dumortierite 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 Dumortierite and Cassiterite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Cassiterite Specific Gravity

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