Oligoclase and Legrandite Physical Properties

Oligoclase

Legrandite

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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

3.98-4.04

Conchoidal

Imperfect, poor one {100}

4.5-5

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Oligoclase and Legrandite Chemical Formula

While comparing Oligoclase and Legrandite 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 Legrandite chemical formula.

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Oligoclase and Legrandite Specific Gravity

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