Cordierite and Sanidine Physical Properties

Cordierite

Sanidine

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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

2.57-2.662.54-2.61

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

{001} Perfect, {010} Good

1.7 Mohs Hardness

7-7.56

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Cordierite and Sanidine Chemical Formula

While comparing Cordierite and Sanidine 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 Sanidine chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Sanidine- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

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Cordierite Vs Rosasite

Cordierite and Sanidine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Sanidine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Sanidine Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.54-2.61 whereas that of Sanidine is 2.54-2.61.