Glaucophane and Legrandite Physical Properties

Glaucophane

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

3-3.153.98-4.04

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Good on [110] and on [001]

Imperfect, poor one {100}

1.7 Mohs Hardness

6.0-6.54.5-5

2 10

1.8 Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2

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

Glaucophane and Legrandite Chemical Formula

While comparing Glaucophane 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 Glaucophane and Legrandite chemical formula.

Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Glaucophane and Legrandite Specific Gravity

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