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Forsterite
Forsterite

Carnallite
Carnallite



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Forsterite
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Carnallite

Forsterite and Carnallite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.23-3.261.6
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Perfect on {010} imperfect on {100}
None

Mohs Hardness

6.5-72.5
2 10
👆🏻

Chemical Composition

Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
KMgCl3•6(H2O)

Forsterite and Carnallite Chemical Formula

While comparing Forsterite and Carnallite 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 Forsterite and Carnallite chemical formula.

  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Carnallite- KMgCl3•6(H2O)

Forsterite and Carnallite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Carnallite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Carnallite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 1.6 whereas that of Carnallite is 1.6.