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Alunite
Alunite

Milarite
Milarite



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Alunite
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Milarite

Alunite and Milarite 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
 
-
-
-
2.52-2.60
Uneven, Conchoidal
{0001} Imperfect, {1120} Imperfect
5.5-6
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Milarite Chemical Formula

While comparing Alunite and Milarite 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 Milarite chemical formula.

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Alunite and Milarite Specific Gravity

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