Andesine and Oligoclase Physical Properties

Andesine

Oligoclase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.692.62-2.67

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on {001}, good on {010}

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

(Na,Ca)Al_1-2Si_3-2O₈

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

Andesine and Oligoclase Chemical Formula

While comparing Andesine 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 Andesine and Oligoclase chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Andesine and Oligoclase Specific Gravity

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