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Magnetite
Magnetite

Alunite
Alunite



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Magnetite
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Alunite

Magnetite and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
5.2
Uneven, Conchoidal
None
5.5-6.5
Fe 3O 4Ulrich Henn and Claudio C.
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Magnetite and Alunite Chemical Formula

While comparing Magnetite 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 Magnetite and Alunite chemical formula.

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Magnetite and Alunite Specific Gravity

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