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Chromite
Chromite

Alunite
Alunite



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Chromite
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Alunite

Chromite and Alunite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4.5-4.82.6-2.9
Amber
1 7.18
1.5 Fracture
Uneven
Conchoidal, Uneven
1.6 Cleavage
None, parting may develop along {111}
On {0001}, perfect
1.7 Mohs Hardness
5.53.5-4
Amber
2 10
1.8 Chemical Composition
Fe++Cr2O4
KAl3(SO4)2(OH)6

Chromite and Alunite Chemical Formula

While comparing Chromite 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 Chromite and Alunite chemical formula.

  • Chemical formula of Chromite- Fe++Cr2O4
  • Chemical formula of Alunite- KAl3(SO4)2(OH)6

Chromite and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.