Albite and Cordierite Physical Properties

Albite

Cordierite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.652.57-2.66

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect on {001}, very good on {010}, imperfect on {110}

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

1.7 Mohs Hardness

6-6.57-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Albite and Cordierite Chemical Formula

While comparing Albite 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 Albite and Cordierite chemical formula.

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

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Albite and Cordierite Specific Gravity

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