Oligoclase and Malachite Physical Properties

Oligoclase

Malachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.673.25-4.10

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

6-6.53.5-4

2 10

1.8 Chemical Composition

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

Cu₂CO₃(OH)₂

Oligoclase and Malachite Chemical Formula

While comparing Oligoclase and Malachite 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 Malachite 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 Malachite- Cu₂CO₃(OH)₂

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Oligoclase and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Malachite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.25-4.10 whereas that of Malachite is 3.25-4.10.