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Polyhalite
Polyhalite

Serendibite
Serendibite



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Polyhalite
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Serendibite

Polyhalite and Serendibite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.783.43-3.44
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

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

Mohs Hardness

3.56.5-7
2 10
👆🏻

Chemical Composition

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

Polyhalite and Serendibite Chemical Formula

While comparing Polyhalite and Serendibite 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 Serendibite chemical formula.

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

Polyhalite and Serendibite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Serendibite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Serendibite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.43-3.44 whereas that of Serendibite is 3.43-3.44.