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Pezzottaite
Pezzottaite

Polyhalite
Polyhalite



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Pezzottaite
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Polyhalite

Pezzottaite and Polyhalite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

2.90-3.142.78
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Conchoidal

Cleavage

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

Mohs Hardness

7.5-83.5
2 10
👆🏻

Chemical Composition

(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
K2Ca2Mg(SO4)4·2H2O

Pezzottaite and Polyhalite Chemical Formula

While comparing Pezzottaite 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 Pezzottaite and Polyhalite chemical formula.

  • Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Pezzottaite and Polyhalite Specific Gravity

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