Oligoclase and Dumortierite Physical Properties

Oligoclase

Dumortierite

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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

2.62-2.673.26-3.41

1 7.18

1.5 Fracture

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

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

6-6.57-8.5

2 10

1.8 Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

Oligoclase and Dumortierite Chemical Formula

While comparing Oligoclase and Dumortierite 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 Dumortierite 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 Dumortierite- AlAl₆O₃BSi₃O₁₈

Compare Colorless Gems

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Oligoclase and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.