Alunite and Goshenite Physical Properties

Alunite

Goshenite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.92.60-2.90

1 7.18

1.5 Fracture

Conchoidal, Uneven

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

On {0001}, perfect

3,1 basal

1.7 Mohs Hardness

3.5-47.5-8

2 10

1.8 Chemical Composition

KAl3(SO4)2(OH)6

Be₃Al₂SiO₆

Alunite and Goshenite Chemical Formula

While comparing Alunite and Goshenite 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 Goshenite chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6
Chemical formula of Goshenite- Be₃Al₂SiO₆

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Alunite and Goshenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Goshenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Goshenite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 2.60-2.90 whereas that of Goshenite is 2.60-2.90.