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Polyhalite
Polyhalite

Glaucophane
Glaucophane



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Polyhalite
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Glaucophane

Polyhalite and Glaucophane Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.783-3.15
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Perfect on {10 1 }; parting on {010}
Good on [110] and on [001]

Mohs Hardness

3.56.0-6.5
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
[ ]Na2(Mg3Al2)Si8O22(OH)2

Polyhalite and Glaucophane Chemical Formula

While comparing Polyhalite and Glaucophane 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 Glaucophane chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

Polyhalite and Glaucophane Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Glaucophane Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Glaucophane Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3-3.15 whereas that of Glaucophane is 3-3.15.