Legrandite and Forsterite Physical Properties

Legrandite

Forsterite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.98-4.043.23-3.26

1 7.18

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Fracture

Conchoidal

Cleavage

Imperfect, poor one {100}

Perfect on {010} imperfect on {100}

Mohs Hardness

4.5-56.5-7

2 10

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Chemical Composition

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

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Legrandite and Forsterite Chemical Formula

While comparing Legrandite and Forsterite 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 Forsterite 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 Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Legrandite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.