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Inderite
Inderite

Polyhalite
Polyhalite



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Inderite
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Polyhalite

Inderite and Polyhalite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

1.792.78
1 7.18
👆🏻

Fracture

Uneven
Conchoidal

Cleavage

{110} Good
Perfect on {10 1 }; parting on {010}

Mohs Hardness

2.53.5
2 10
👆🏻

Chemical Composition

MgB 3O 3(OH) 5 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
K2Ca2Mg(SO4)4·2H2O

Inderite and Polyhalite Chemical Formula

While comparing Inderite 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 Inderite and Polyhalite chemical formula.

  • Chemical formula of Inderite- MgB 3O 3(OH) 5 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Inderite and Polyhalite Specific Gravity

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