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Sylvite
Sylvite

Poudretteite
Poudretteite



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Sylvite
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Poudretteite

Sylvite and Poudretteite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

1.9932.51-2.53
1 7.18
👆🏻

Fracture

Uneven
Conchoidal, Splintery

Cleavage

Perfect on [100], [010], [001]
None

Mohs Hardness

2.55
2 10
👆🏻

Chemical Composition

KCl
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Sylvite and Poudretteite Chemical Formula

While comparing Sylvite 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 Sylvite and Poudretteite chemical formula.

  • Chemical formula of Sylvite- KCl
  • Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Sylvite and Poudretteite Specific Gravity

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