Kornerupine and Legrandite Physical Properties

Kornerupine

Legrandite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.453.98-4.04

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Good on {110}

Imperfect, poor one {100}

1.7 Mohs Hardness

6.54.5-5

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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

Kornerupine and Legrandite Chemical Formula

While comparing Kornerupine and Legrandite 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 Kornerupine and Legrandite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Kornerupine and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.