Aegirine and Alunite Physical Properties

Aegirine

Alunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.50-3.602.6-2.9

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

Conchoidal, Uneven

1.6 Cleavage

Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}

On {0001}, perfect

1.7 Mohs Hardness

63.5-4

2 10

1.8 Chemical Composition

(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

KAl3(SO4)2(OH)6

Aegirine and Alunite Chemical Formula

While comparing Aegirine 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 Aegirine and Alunite chemical formula.

Chemical formula of Aegirine- (Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Aegirine and Alunite Specific Gravity

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