Omphacite and Petalite Physical Properties

Omphacite

Petalite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.16-3.43

Uneven, Conchoidal

{110} Good, {110} Good

5-6

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Brittle

insoluble

2.40

Subconchoidal, ConchoidalWalter Schumann, Conchoidal

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

6-6.5

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

Omphacite and Petalite Chemical Formula

While comparing Omphacite 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 Omphacite and Petalite chemical formula.

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Omphacite Vs Rutilated Quartz

Omphacite Vs Sapphirine

Omphacite Vs Seraphinite

Omphacite and Petalite Specific Gravity

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