Petalite and Hauyne Physical Properties

Petalite

Hauyne

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

insoluble

Gelatinises in acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.402.4-2.5

1 7.18

1.5 Fracture

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

Uneven, Conchoidal, Brittle

1.6 Cleavage

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

Distinct on {110}

1.7 Mohs Hardness

6-6.55-6

2 10

1.8 Chemical Composition

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

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

Petalite and Hauyne Chemical Formula

While comparing Petalite and Hauyne 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 Petalite and Hauyne chemical formula.

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

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Petalite and Hauyne Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petalite and Hauyne Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Hauyne Optical Properties during the identification of gemstone. Specific gravity of Petalite is 2.4-2.5 whereas that of Hauyne is 2.4-2.5.