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Alunite
Alunite

Cassiterite
Cassiterite



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Alunite
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Cassiterite

Alunite and Cassiterite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6
 
Brittle
insoluble
-
6.86-7.03
Subconchoidal, Uneven, Conchoidal, Irregular
{100} imperfect, {110} indistinct; partings on {111} or {011}
6-7
SnO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Cassiterite Chemical Formula

While comparing Alunite 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 Alunite and Cassiterite chemical formula.

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Alunite and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite Vs Cassiterite during the identification of gemstone. Specific gravity of Alunite is whereas that of Cassiterite is .