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Demantoid
Demantoid

Alunite
Alunite



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Demantoid
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Alunite

Demantoid and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.77-3.95
-
Imperfect
6.5
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Demantoid and Alunite Chemical Formula

While comparing Demantoid 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 Demantoid and Alunite chemical formula.

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Demantoid and Alunite Specific Gravity

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