Cordierite and Vishnevite Physical Properties

Cordierite

Vishnevite

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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

2.57-2.66

Not Available

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Brittle, Uneven

1.6 Cleavage

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

Perfect

1.7 Mohs Hardness

7-7.5

5-6

1.8 Chemical Composition

Mg2Al4Si5O18

Not Available

Cordierite and Vishnevite Chemical Formula

While comparing Cordierite and Vishnevite 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 Vishnevite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18

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Cordierite and Vishnevite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Vishnevite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Vishnevite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is Not Available whereas that of Vishnevite is Not Available.