Oligoclase and Purpurite Physical Properties

Oligoclase

Purpurite

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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

2.62-2.673.2-3.4

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

[100] [001] perfect

1.7 Mohs Hardness

6-6.54-4.5

2 10

1.8 Chemical Composition

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

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Oligoclase and Purpurite Chemical Formula

While comparing Oligoclase and Purpurite 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 Purpurite 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 Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Compare Colorless Gems

Oligoclase Vs Phosphophyllite

Oligoclase Vs Phenakite

Oligoclase Vs Pezzottaite

Oligoclase and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.