Cordierite and Gaspeite Physical Properties

Cordierite

Gaspeite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.663.71

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Uneven

1.6 Cleavage

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

{10 1 1} Good

1.7 Mohs Hardness

7-7.54.5-5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

(Ni,Mg,Fe++)CO3

Cordierite and Gaspeite Chemical Formula

While comparing Cordierite and Gaspeite 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 Gaspeite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Gaspeite- (Ni,Mg,Fe++)CO3

Compare Blue Gemstones

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Cordierite and Gaspeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Gaspeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Gaspeite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.71 whereas that of Gaspeite is 3.71.