Legrandite and Riebeckite Physical Properties

Legrandite

Riebeckite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.98-4.043.28-3.44

1 7.18

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

Uneven, Splintery, Brittle

1.6 Cleavage

Imperfect, poor one {100}

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

4.5-55.0-6.0

2 10

1.8 Chemical Composition

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

Not Available

Legrandite and Riebeckite Chemical Formula

While comparing Legrandite and Riebeckite 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 Riebeckite chemical formula.

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

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Legrandite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.