Legrandite and Glaucophane Physical Properties

Legrandite

Glaucophane

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.98-4.043-3.15

1 7.18

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Imperfect, poor one {100}

Good on [110] and on [001]

1.7 Mohs Hardness

4.5-56.0-6.5

2 10

1.8 Chemical Composition

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

[ ]Na2(Mg3Al2)Si8O22(OH)2

Legrandite and Glaucophane Chemical Formula

While comparing Legrandite and Glaucophane 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 Glaucophane 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 Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

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Legrandite and Glaucophane Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Glaucophane Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Glaucophane Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3-3.15 whereas that of Glaucophane is 3-3.15.