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Alunite
Alunite

Taaffeite
Taaffeite



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Alunite
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Taaffeite

Alunite and Taaffeite Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.6-2.93.60-3.61
1 7.18
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Fracture

Conchoidal, Uneven
Conchoidal

Cleavage

On {0001}, perfect
Imperfect/fair/absent

Mohs Hardness

3.5-48-8.5
2 10
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Chemical Composition

KAl3(SO4)2(OH)6
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

Alunite and Taaffeite Chemical Formula

While comparing Alunite and Taaffeite 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 Taaffeite chemical formula.

  • Chemical formula of Alunite- KAl3(SO4)2(OH)6
  • Chemical formula of Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

Alunite and Taaffeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Taaffeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Taaffeite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.60-3.61 whereas that of Taaffeite is 3.60-3.61.