Dumortierite and Zinnwaldite Physical Properties

Dumortierite

Zinnwaldite

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1 Physical Properties

1.1 Tenacity

Not Available

Elastic

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.412.9-3.1

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

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

Perfect basal {001}

1.7 Mohs Hardness

7-8.53.5-4.0

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Not Available

Dumortierite and Zinnwaldite Chemical Formula

While comparing Dumortierite and Zinnwaldite 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 Zinnwaldite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Dumortierite and Zinnwaldite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Zinnwaldite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Zinnwaldite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.9-3.1 whereas that of Zinnwaldite is 2.9-3.1.