Bronzite and Petalite Physical Properties

Bronzite

Petalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.352.40

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

5.56-6.5

2 10

1.8 Chemical Composition

(Mg,Fe) 2Si 2O 6Ulrich Henn and Claudio C.

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

Bronzite and Petalite Chemical Formula

While comparing Bronzite 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 Bronzite and Petalite chemical formula.

Chemical formula of Bronzite- (Mg,Fe) 2Si 2O 6Ulrich Henn and Claudio C.
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bronzite and Petalite Specific Gravity

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