Dumortierite and Albite Physical Properties

Dumortierite

Albite

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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

3.26-3.412.60-2.65

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

7-8.56-6.5

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Dumortierite and Albite Chemical Formula

While comparing Dumortierite and Albite 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 Dumortierite and Albite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Dumortierite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Albite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.60-2.65 whereas that of Albite is 2.60-2.65.