Chrome Tourmaline and Petalite Physical Properties

Chrome Tourmaline

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

2.85-3.352.40

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

3,2

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

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas.

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

Chrome Tourmaline and Petalite Chemical Formula

While comparing Chrome Tourmaline 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 Chrome Tourmaline and Petalite chemical formula.

Chemical formula of Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Chrome Tourmaline and Petalite Specific Gravity

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