Hauyne and Alunite Physical Properties

Hauyne

Alunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Gelatinises in acids

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.4-2.52.6-2.9

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle

Conchoidal, Uneven

1.6 Cleavage

Distinct on {110}

On {0001}, perfect

1.7 Mohs Hardness

5-63.5-4

2 10

1.8 Chemical Composition

(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2

KAl3(SO4)2(OH)6

Hauyne and Alunite Chemical Formula

While comparing Hauyne 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 Hauyne and Alunite chemical formula.

Chemical formula of Hauyne- (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Hauyne and Alunite Specific Gravity

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