Petalite and Rutile Physical Properties

Petalite

Rutile

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.404.20-4.30

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

{110} good, 100 moderate, parting on {092} and {011}

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

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

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Petalite and Rutile Chemical Formula

While comparing Petalite and Rutile 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 Rutile chemical formula.

Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Petalite Vs Scheelite

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Petalite and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petalite and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Rutile Optical Properties during the identification of gemstone. Specific gravity of Petalite is 4.20-4.30 whereas that of Rutile is 4.20-4.30.