Anorthite and Dumortierite Physical Properties

Anorthite

Dumortierite

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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

2.773.26-3.41

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

Perfect [001] good [010] poor [110]

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

1.7 Mohs Hardness

6-6.57-8.5

2 10

1.8 Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

AlAl₆O₃BSi₃O₁₈

Anorthite and Dumortierite Chemical Formula

While comparing Anorthite 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 Anorthite and Dumortierite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Anorthite and Dumortierite Specific Gravity

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