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Alunite
Alunite

Linarite
Linarite



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Alunite
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Linarite

Alunite and Linarite Physical Properties

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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
 
-
-
-
5.35
Conchoidal
Perfect on {100}, imperfect on {001}
2.5
PbCu(SO 4)(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Alunite and Linarite Chemical Formula

While comparing Alunite and Linarite 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 Linarite chemical formula.

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Alunite and Linarite Specific Gravity

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