Petalite and Calcite Physical Properties

Petalite

Calcite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

insoluble

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.40

2.67-2.73

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

6-6.5

1.8 Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Petalite and Calcite Chemical Formula

While comparing Petalite and Calcite 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 Calcite chemical formula.

Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Compare Gems Found In Australia

Petalite Vs Scheelite

Petalite Vs Scolecite

Petalite Vs Sapphire

Petalite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petalite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Petalite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.