Piemontite and Cassiterite Physical Properties

Piemontite

Cassiterite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Durability

Specific Gravity

-99996.86-7.03

1 7.18

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Fracture

Uneven, Splintery

Subconchoidal, Uneven, Conchoidal, Irregular

Cleavage

[001] good, [100] distinct

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

Mohs Hardness

6-6.56-7

2 10

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Chemical Composition

Ca2Al3(SiO4)(Si2O7)O(OH)

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

Piemontite and Cassiterite Chemical Formula

While comparing Piemontite 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 Piemontite and Cassiterite chemical formula.

Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)
Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Piemontite and Cassiterite Specific Gravity

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