Legrandite and Kyanite Physical Properties

Legrandite

Kyanite

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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

3.98-4.043.53-3.65

1 7.18

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

Splintery, Brittle, Metallic

1.6 Cleavage

Imperfect, poor one {100}

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

4.5-54-7

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 Kyanite Chemical Formula

While comparing Legrandite and Kyanite 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 Kyanite 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 Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.