Goshenite and Alunite Physical Properties

Goshenite

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

2.60-2.90

2.6-2.9

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

3,1 basal

On {0001}, perfect

1.7 Mohs Hardness

7.5-8

3.5-4

1.8 Chemical Composition

Be₃Al₂SiO₆

KAl3(SO4)2(OH)6

Goshenite and Alunite Chemical Formula

While comparing Goshenite 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 Goshenite and Alunite chemical formula.

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

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Goshenite and Alunite Specific Gravity

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