Shigaite and Cordierite Physical Properties

Shigaite

Cordierite

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.322.57-2.66

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect on {0001}

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

1.7 Mohs Hardness

27-7.5

2 10

1.8 Chemical Composition

Not Available

Mg2Al4Si5O18

Shigaite and Cordierite Chemical Formula

While comparing Shigaite 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 Shigaite and Cordierite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18

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Shigaite and Cordierite Specific Gravity

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