Legrandite and Danburite Physical Properties

Legrandite

Danburite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.98-4.042.97-3.03

1 7.18

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Fracture

Conchoidal

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

Imperfect, poor one {100}

{001} Poor

Mohs Hardness

4.5-57

2 10

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Chemical Composition

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

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

Legrandite and Danburite Chemical Formula

While comparing Legrandite and Danburite 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 Danburite 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 Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Legrandite and Danburite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Danburite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Danburite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 2.97-3.03 whereas that of Danburite is 2.97-3.03.