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Colemanite
Colemanite

Alunite
Alunite



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Colemanite
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Alunite

Colemanite and Alunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.40-2.42
-
{010} Perfect, {001} Distinct
4.5
Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Colemanite and Alunite Chemical Formula

While comparing Colemanite and Alunite 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 Colemanite and Alunite chemical formula.

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Colemanite and Alunite Specific Gravity

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