Ekanite and Alunite Physical Properties

Ekanite

Alunite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.28-3.322.6-2.9

1 7.18

1.5 Fracture

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Conchoidal, Uneven

1.6 Cleavage

{101} Distinct

On {0001}, perfect

1.7 Mohs Hardness

6-6.53.5-4

2 10

1.8 Chemical Composition

ThCa 2Si 8O 20Walter Schumann , Gemstones of the world (2001) More from other references

KAl3(SO4)2(OH)6

Ekanite and Alunite Chemical Formula

While comparing Ekanite 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 Ekanite and Alunite chemical formula.

Chemical formula of Ekanite- ThCa 2Si 8O 20Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Ekanite and Alunite Specific Gravity

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