Legrandite and Dumortierite Physical Properties

Legrandite

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

3.98-4.043.26-3.41

1 7.18

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

Imperfect, poor one {100}

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

1.7 Mohs Hardness

4.5-57-8.5

2 10

1.8 Chemical Composition

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

AlAl₆O₃BSi₃O₁₈

Legrandite and Dumortierite Chemical Formula

While comparing Legrandite 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 Legrandite and Dumortierite chemical formula.

Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Legrandite and Dumortierite Specific Gravity

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