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Anglesite
Anglesite

Alunite
Alunite



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Anglesite
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Alunite

Anglesite and Alunite Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

6.30-6.392.6-2.9
1 7.18
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Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

[001] good, [210] distinct
On {0001}, perfect

Mohs Hardness

3-3.53.5-4
2 10
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Chemical Composition

PbSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
KAl3(SO4)2(OH)6

Anglesite and Alunite Chemical Formula

While comparing Anglesite 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 Anglesite and Alunite chemical formula.

  • Chemical formula of Anglesite- PbSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
  • Chemical formula of Alunite- KAl3(SO4)2(OH)6

Anglesite and Alunite Specific Gravity

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