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Magnesite
Magnesite

Alunite
Alunite



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Magnesite
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Alunite

Magnesite and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Magnesite and Alunite Chemical Formula

While comparing Magnesite 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 Magnesite and Alunite chemical formula.

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Magnesite and Alunite Specific Gravity

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