Alunite and Enstatite Physical Properties

Alunite

Enstatite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.93.20-3.25

1 7.18

1.5 Fracture

Conchoidal, Uneven

Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

On {0001}, perfect

Good/distinct on [210]

1.7 Mohs Hardness

3.5-45.5

2 10

1.8 Chemical Composition

KAl3(SO4)2(OH)6

Mg 2Si 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Enstatite Chemical Formula

While comparing Alunite and Enstatite 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 Enstatite chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6
Chemical formula of Enstatite- Mg 2Si 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alunite and Enstatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Enstatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Enstatite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.20-3.25 whereas that of Enstatite is 3.20-3.25.