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Alunite
Alunite

Magnesite
Magnesite



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Alunite
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Magnesite

Alunite and Magnesite 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
 
Brittle
Effervesces in hot HCl
-
2.92-3.12
Conchoidal
[10 1 1] perfect
3.5-4.5
MgCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Magnesite Chemical Formula

While comparing Alunite and Magnesite 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 Magnesite chemical formula.

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Alunite and Magnesite Specific Gravity

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