Anatase and Alunite Physical Properties

Anatase

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

3.82-3.972.6-2.9

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Uneven

1.6 Cleavage

Perfect on [001] and [011]

On {0001}, perfect

1.7 Mohs Hardness

5.5-63.5-4

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

KAl3(SO4)2(OH)6

Anatase and Alunite Chemical Formula

While comparing Anatase 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 Anatase and Alunite chemical formula.

Chemical formula of Anatase- TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Anatase and Alunite Specific Gravity

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