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Mellite
Mellite

Dravite
Dravite



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Mellite
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Dravite

Mellite and Dravite 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.
 
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-
-
3.03-3.18
Uneven, Irregular, Conchoidal
{???} Indistinct
7-7.5
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Mellite and Dravite Chemical Formula

While comparing Mellite and Dravite 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 Dravite chemical formula.

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Mellite and Dravite Specific Gravity

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