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Polyhalite
Polyhalite

Rhodolite
Rhodolite



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Polyhalite
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Rhodolite

Polyhalite and Rhodolite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.783.84
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Perfect on {10 1 }; parting on {010}
none, may show indistinct parting

Mohs Hardness

3.57-7.5
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
(Mg,Fe)3Al2Si3O12

Polyhalite and Rhodolite Chemical Formula

While comparing Polyhalite and Rhodolite 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 Rhodolite chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Rhodolite- (Mg,Fe)3Al2Si3O12

Polyhalite and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.84 whereas that of Rhodolite is 3.84.