Orthoclase and Cordierite Physical Properties

Orthoclase

Cordierite

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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

2.54-2.612.57-2.66

1 7.18

1.5 Fracture

Gems, Uneven

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

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

Fair on {100}, poor on {001} and {010}

1.7 Mohs Hardness

67-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Orthoclase and Cordierite Chemical Formula

While comparing Orthoclase and Cordierite 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 Cordierite chemical formula.

Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Colorless Gems

Orthoclase Vs Phosphophyllite

Orthoclase Vs Phenakite

Orthoclase Vs Phosphosiderite

Orthoclase and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Orthoclase and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Orthoclase and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Orthoclase is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.