Glaucophane and Sillimanite Physical Properties

Glaucophane

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3-3.153.20-3.26

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Splintery

1.6 Cleavage

Good on [110] and on [001]

{010} perfect

1.7 Mohs Hardness

6.0-6.56-7.5

2 10

1.8 Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Glaucophane and Sillimanite Chemical Formula

While comparing Glaucophane and Sillimanite 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 Sillimanite chemical formula.

Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

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Glaucophane and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Glaucophane and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Glaucophane and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Glaucophane is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.