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Alunite
Alunite

Thomsonite
Thomsonite



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Alunite
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Thomsonite

Alunite and Thomsonite 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
 
-
-
-
2.25-2.40
-
perfect on {010}; good on {100}
5-5.5
NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Thomsonite Chemical Formula

While comparing Alunite and Thomsonite 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 Thomsonite chemical formula.

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Alunite and Thomsonite Specific Gravity

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