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Polyhalite
Polyhalite

Demantoid Garnet
Demantoid Garnet



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Polyhalite
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Demantoid Garnet

Polyhalite and Demantoid Garnet Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.78-9999
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

Perfect on {10 1 }; parting on {010}
Imperfect

Mohs Hardness

3.5-9999
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
Ca3Fe2(SiO4)3

Polyhalite and Demantoid Garnet Chemical Formula

While comparing Polyhalite and Demantoid Garnet 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 Polyhalite and Demantoid Garnet chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Demantoid Garnet- Ca3Fe2(SiO4)3

Polyhalite and Demantoid Garnet Specific Gravity

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