Oligoclase and Andesine Physical Properties

Oligoclase

Andesine

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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

2.62-2.672.65-2.69

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Perfect on {001}, good on {010}

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

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

(Na,Ca)Al_1-2Si_3-2O₈

Oligoclase and Andesine Chemical Formula

While comparing Oligoclase and Andesine 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 Andesine chemical formula.

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

Compare Colorless Gems

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Oligoclase Vs Phosphophyllite

Oligoclase and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Andesine Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 2.65-2.69 whereas that of Andesine is 2.65-2.69.