Barite and Petalite Physical Properties

Barite

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

4.482.40

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

{010} Perfect, {210} Perfect, {010} Imperfect

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

1.7 Mohs Hardness

3-3.56-6.5

2 10

1.8 Chemical Composition

BaSO4

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

Barite and Petalite Chemical Formula

While comparing Barite 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 Barite and Petalite chemical formula.

Chemical formula of Barite- BaSO4
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Barite and Petalite Specific Gravity

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