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Rhodizite
Rhodizite

Polyhalite
Polyhalite



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Rhodizite
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Polyhalite

Rhodizite and Polyhalite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.34-3.442.78
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct
Perfect on {10 1 }; parting on {010}

Mohs Hardness

8-8.53.5
2 10
👆🏻

Chemical Composition

(K,Cs)Al 4Be 4(B,Be) 12O 28Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
K2Ca2Mg(SO4)4·2H2O

Rhodizite and Polyhalite Chemical Formula

While comparing Rhodizite and Polyhalite 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 Rhodizite and Polyhalite chemical formula.

  • Chemical formula of Rhodizite- (K,Cs)Al 4Be 4(B,Be) 12O 28Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Rhodizite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodizite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodizite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Rhodizite is 2.78 whereas that of Polyhalite is 2.78.