Oligoclase and Biotite Physical Properties

Oligoclase

Biotite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.62-2.67

Uneven

From the Greek, oligos and kasein, little cleavage.

6-6.5

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

Brittle

2.7-3.3

Uneven, Even

Perfect on the {001}

2.5-3.0

K(Mg,Fe++)3[AlSi3O10(OH,F)2

Oligoclase and Biotite Chemical Formula

While comparing Oligoclase and Biotite 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 Oligoclase and Biotite chemical formula.

Compare Colorless Gems

Oligoclase Vs Zektzerite

Oligoclase Vs Taaffeite

Oligoclase Vs Muscovite

Oligoclase and Biotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase Vs Biotite during the identification of gemstone. Specific gravity of Oligoclase is whereas that of Biotite is .