Oligoclase and Kyanite Physical Properties

Oligoclase

Kyanite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.673.53-3.65

1 7.18

1.5 Fracture

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

Splintery, Brittle, Metallic

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

6-6.54-7

2 10

1.8 Chemical Composition

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

Not Available

Oligoclase and Kyanite Chemical Formula

While comparing Oligoclase and Kyanite 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 Kyanite chemical formula.

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

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Oligoclase and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.