Hauyne and Petalite Physical Properties

Hauyne

Petalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Gelatinises in acids

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.4-2.52.40

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

Distinct on {110}

Perfect on {001}, poor on {201} with 38.5° angle between the two

1.7 Mohs Hardness

5-66-6.5

2 10

1.8 Chemical Composition

(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Hauyne and Petalite Chemical Formula

While comparing Hauyne and Petalite 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 Hauyne and Petalite chemical formula.

Chemical formula of Hauyne- (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hauyne and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hauyne and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hauyne and Petalite Optical Properties during the identification of gemstone. Specific gravity of Hauyne is 2.40 whereas that of Petalite is 2.40.