Orthoclase and Periclase Physical Properties

Orthoclase

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.54-2.613.7-3.9

1 7.18

1.5 Fracture

Gems, Uneven

Conchoidal, Brittle

1.6 Cleavage

Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.

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

1.7 Mohs Hardness

65.5-6

2 10

1.8 Chemical Composition

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Orthoclase and Periclase Chemical Formula

While comparing Orthoclase and Periclase 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 Orthoclase and Periclase chemical formula.

Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Colorless Gems

Orthoclase Vs Phenakite

Orthoclase Vs Phosphophyllite

Orthoclase Vs Phosphosiderite

Orthoclase and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Orthoclase and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Orthoclase and Periclase Optical Properties during the identification of gemstone. Specific gravity of Orthoclase is 3.7-3.9 whereas that of Periclase is 3.7-3.9.