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Polyhalite
Polyhalite

Papagoite
Papagoite



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Polyhalite
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Polyhalite and Papagoite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.783.25
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

Perfect on {10 1 }; parting on {010}
Imperfect in one direction

Mohs Hardness

3.55-5.5
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
CaCuAlSi 2O 6(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Polyhalite and Papagoite Chemical Formula

While comparing Polyhalite and Papagoite 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 Papagoite chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Papagoite- CaCuAlSi 2O 6(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Polyhalite and Papagoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Papagoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Papagoite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.25 whereas that of Papagoite is 3.25.