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Mellite
Mellite

Poudretteite
Poudretteite



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Mellite
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Poudretteite

Mellite and Poudretteite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

1.58-1.602.51-2.53
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Splintery

Cleavage

{011} Imperfect
None

Mohs Hardness

25
2 10
👆🏻

Chemical Composition

Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Mellite and Poudretteite Chemical Formula

While comparing Mellite and Poudretteite 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 Poudretteite chemical formula.

  • Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
  • Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Mellite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mellite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mellite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Mellite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.