Willemite and Dumortierite Physical Properties

Willemite

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

3.89-4.183.26-3.41

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

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

1.6 Cleavage

{0001}, {11 2 0} imperfect

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

1.7 Mohs Hardness

5.57-8.5

2 10

1.8 Chemical Composition

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

AlAl₆O₃BSi₃O₁₈

Willemite and Dumortierite Chemical Formula

While comparing Willemite 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 Willemite and Dumortierite chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Willemite and Dumortierite Specific Gravity

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