Cordierite Iolite and Oligoclase Physical Properties

Cordierite Iolite

Oligoclase

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.662.62-2.67

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Cordierite Iolite and Oligoclase Chemical Formula

While comparing Cordierite Iolite and Oligoclase 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 Iolite and Oligoclase chemical formula.

Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Cordierite Iolite and Oligoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.