Legrandite and Turquoise Physical Properties

Legrandite

Turquoise

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.98-4.042.30-2.90

1 7.18

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Fracture

Conchoidal

Cleavage

Imperfect, poor one {100}

Good to perfect_usually N/A

Mohs Hardness

4.5-55-6

2 10

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Chemical Composition

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

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Legrandite and Turquoise Chemical Formula

While comparing Legrandite and Turquoise 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 Turquoise 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 Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Legrandite and Turquoise Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.