Cordierite and Anorthoclase Physical Properties

Cordierite

Anorthoclase

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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

2.57-2.662.56-2.62

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

From the Greek for oblique and fracture, descriptive of the cleavage

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Cordierite and Anorthoclase Chemical Formula

While comparing Cordierite and Anorthoclase 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 Cordierite and Anorthoclase chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Anorthoclase- (Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

Cordierite Vs Plumbogummite

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Cordierite Vs Rosasite

Cordierite and Anorthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.