Beudantite and Alunite Physical Properties

Beudantite

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

4.482.6-2.9

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Conchoidal, Uneven

1.6 Cleavage

distinct; good on {0001}

On {0001}, perfect

1.7 Mohs Hardness

3.5-4.53.5-4

2 10

1.8 Chemical Composition

PbFe+++3(AsO4)(SO4)(OH)6

KAl3(SO4)2(OH)6

Beudantite and Alunite Chemical Formula

While comparing Beudantite 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 Beudantite and Alunite chemical formula.

Chemical formula of Beudantite- PbFe+++3(AsO4)(SO4)(OH)6
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Beudantite and Alunite Specific Gravity

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