Verdelite and Glaucophane Physical Properties

Verdelite

Glaucophane

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.403-3.15

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Not Available

Good on [110] and on [001]

1.7 Mohs Hardness

7-7.56.0-6.5

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

[ ]Na2(Mg3Al2)Si8O22(OH)2

Verdelite and Glaucophane Chemical Formula

While comparing Verdelite 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 Verdelite and Glaucophane chemical formula.

Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

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Verdelite and Glaucophane Specific Gravity

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