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Alunite
Alunite

Rossmanite
Rossmanite



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Alunite
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Rossmanite

Alunite and Rossmanite 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
 
-
-
-
3
-
None
-9999
◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Alunite and Rossmanite Chemical Formula

While comparing Alunite and Rossmanite 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 Rossmanite chemical formula.

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Alunite and Rossmanite Specific Gravity

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