Cordierite and Williamsite Physical Properties

Cordierite

Williamsite

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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

2.57-2.662.51-2.63

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal, Conchoidal, Handbook of mineralogy (2001)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

7-7.54

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Cordierite and Williamsite Chemical Formula

While comparing Cordierite and Williamsite 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 Williamsite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

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Cordierite and Williamsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Williamsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Williamsite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.51-2.63 whereas that of Williamsite is 2.51-2.63.