Diaspore and Cordierite Physical Properties

Diaspore

Cordierite

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1 Physical Properties

1.1 Tenacity

Very brittle

Brittle

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.402.57-2.66

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

{010} perfect, {110} distinct, {100} in traces

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

1.7 Mohs Hardness

6.5-77-7.5

2 10

1.8 Chemical Composition

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Mg2Al4Si5O18

Diaspore and Cordierite Chemical Formula

While comparing Diaspore 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 Diaspore and Cordierite chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Cordierite- Mg2Al4Si5O18

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Diaspore and Cordierite Specific Gravity

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