Chiastolite and Cordierite Physical Properties

Chiastolite

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

3.00-3.152.57-2.66

1 7.18

1.5 Fracture

Not Available

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

5-5.57-7.5

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

Mg2Al4Si5O18

Chiastolite and Cordierite Chemical Formula

While comparing Chiastolite 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 Chiastolite and Cordierite chemical formula.

Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Chiastolite and Cordierite Specific Gravity

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