Periclase and Oligoclase Physical Properties

Periclase

Oligoclase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.92.62-2.67

1 7.18

1.5 Fracture

Conchoidal, Brittle

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven

1.6 Cleavage

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

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

5.5-66-6.5

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Periclase and Oligoclase Chemical Formula

While comparing Periclase and Oligoclase 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 Oligoclase chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Periclase Vs Rinkite Ce

Periclase Vs Scheelite

Periclase Vs Sapphire

Periclase and Oligoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Periclase and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.