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Fuchsite
Fuchsite

Alunite
Alunite



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Fuchsite
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Alunite

Fuchsite and Alunite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.77-2.882.6-2.9
Amber
1 7.18
1.5 Fracture
Uneven
Conchoidal, Uneven
1.6 Cleavage
Perfect basal
On {0001}, perfect
1.7 Mohs Hardness
2.53.5-4
Amber
2 10
1.8 Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
KAl3(SO4)2(OH)6

Fuchsite and Alunite Chemical Formula

While comparing Fuchsite 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 Fuchsite and Alunite chemical formula.

  • Chemical formula of Fuchsite- K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
  • Chemical formula of Alunite- KAl3(SO4)2(OH)6

Fuchsite and Alunite Specific Gravity

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