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Mellite
Mellite

Gahnite
Gahnite



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Mellite
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Gahnite

Mellite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.58-1.60
Conchoidal
{011} Imperfect
2
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Mellite and Gahnite Chemical Formula

While comparing Mellite and Gahnite 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 Mellite and Gahnite chemical formula.

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Mellite and Gahnite Specific Gravity

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