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Pargasite
Pargasite

Alunite
Alunite



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Pargasite
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Alunite

Pargasite and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.04-3.26
Splintery, Uneven
{110} perfect
5-6
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Pargasite and Alunite Chemical Formula

While comparing Pargasite and Alunite 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 Pargasite and Alunite chemical formula.

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Pargasite and Alunite Specific Gravity

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