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Alunite
Alunite

Langbeinite
Langbeinite



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Alunite
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Langbeinite

Alunite and Langbeinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Slowly dissolves in water

Durability

-
-

Specific Gravity

2.6-2.9-9999
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Conchoidal

Cleavage

On {0001}, perfect
None

Mohs Hardness

3.5-43.5-4
2 10
👆🏻

Chemical Composition

KAl3(SO4)2(OH)6
K2Mg2(SO4)3

Alunite and Langbeinite Chemical Formula

While comparing Alunite and Langbeinite 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 Langbeinite chemical formula.

  • Chemical formula of Alunite- KAl3(SO4)2(OH)6
  • Chemical formula of Langbeinite- K2Mg2(SO4)3

Alunite and Langbeinite Specific Gravity

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