Alunite and Ekanite Physical Properties

Alunite

Ekanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.93.28-3.32

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

On {0001}, perfect

{101} Distinct

1.7 Mohs Hardness

3.5-46-6.5

2 10

1.8 Chemical Composition

KAl3(SO4)2(OH)6

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

Alunite and Ekanite Chemical Formula

While comparing Alunite and Ekanite 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 Ekanite chemical formula.

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

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Alunite and Ekanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Ekanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Ekanite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.28-3.32 whereas that of Ekanite is 3.28-3.32.