Zinnwaldite and Dumortierite Physical Properties

Zinnwaldite

Dumortierite

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.13.26-3.41

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Perfect basal {001}

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

1.7 Mohs Hardness

3.5-4.07-8.5

2 10

1.8 Chemical Composition

Not Available

AlAl₆O₃BSi₃O₁₈

Zinnwaldite and Dumortierite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Dumortierite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Zinnwaldite and Dumortierite Specific Gravity

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