Microcline and Cordierite Physical Properties

Microcline

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

2.55-2.632.57-2.66

1 7.18

1.5 Fracture

Uneven, Uneven, Gems

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

{001} Perfect, {010} Good

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

1.7 Mohs Hardness

6-6.57-7.5

2 10

1.8 Chemical Composition

KAlSi 3O 8Arthur Thomas , Gemstones (2009)

Mg2Al4Si5O18

Microcline and Cordierite Chemical Formula

While comparing Microcline 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 Microcline and Cordierite chemical formula.

Chemical formula of Microcline- KAlSi 3O 8Arthur Thomas , Gemstones (2009)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Microcline and Cordierite Specific Gravity

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