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Alunite
Alunite

Glaucophane
Glaucophane



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Alunite
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Glaucophane

Alunite and Glaucophane Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.6-2.93-3.15
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Conchoidal

Cleavage

On {0001}, perfect
Good on [110] and on [001]

Mohs Hardness

3.5-46.0-6.5
2 10
👆🏻

Chemical Composition

KAl3(SO4)2(OH)6
[ ]Na2(Mg3Al2)Si8O22(OH)2

Alunite and Glaucophane Chemical Formula

While comparing Alunite 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 Alunite and Glaucophane chemical formula.

  • Chemical formula of Alunite- KAl3(SO4)2(OH)6
  • Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

Alunite and Glaucophane Specific Gravity

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