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Mellite
Mellite

Andalusite
Andalusite



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Mellite
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Andalusite

Mellite and Andalusite Physical Properties

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.
 
-
-
-
3.05-3.21
Uneven, Subconchoidal, Splintery
Good on {110}, poor on {100}
7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Mellite and Andalusite Chemical Formula

While comparing Mellite and Andalusite 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 Andalusite chemical formula.

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Mellite and Andalusite Specific Gravity

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