Periclase and Petalite Physical Properties

Periclase

Petalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.92.40

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

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

1.7 Mohs Hardness

5.5-66-6.5

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Periclase and Petalite Chemical Formula

While comparing Periclase 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 Periclase and Petalite chemical formula.

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

Compare Gems Found In Australia

Periclase Vs Scheelite

Periclase Vs Sapphire

Periclase Vs Rinkite Ce

Periclase and Petalite Specific Gravity

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