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Alunite
Alunite

Esperite
Esperite



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Alunite
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Esperite

Alunite and Esperite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6
 
-
-
-
4.28-4.42
Conchoidal
Distinct on [010] and [100] poor on [101]
5-5.5
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)

Alunite and Esperite Chemical Formula

While comparing Alunite and Esperite 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 Esperite chemical formula.

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Alunite and Esperite Specific Gravity

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