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Serendibite
Serendibite

Polyhalite
Polyhalite



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Serendibite
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Polyhalite

Serendibite and Polyhalite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.43-3.442.78
1 7.18
👆🏻

Fracture

-
Conchoidal

Cleavage

None Observed
Perfect on {10 1 }; parting on {010}

Mohs Hardness

6.5-73.5
2 10
👆🏻

Chemical Composition

Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
K2Ca2Mg(SO4)4·2H2O

Serendibite and Polyhalite Chemical Formula

While comparing Serendibite 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 Serendibite and Polyhalite chemical formula.

  • Chemical formula of Serendibite- Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Serendibite and Polyhalite Specific Gravity

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