Andalusite and Glaucophane Physical Properties

Andalusite

Glaucophane

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.05-3.213-3.15

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Conchoidal

Cleavage

Good on {110}, poor on {100}

Good on [110] and on [001]

Mohs Hardness

7.56.0-6.5

2 10

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Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

[ ]Na2(Mg3Al2)Si8O22(OH)2

Andalusite and Glaucophane Chemical Formula

While comparing Andalusite 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 Andalusite and Glaucophane chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

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Andalusite and Glaucophane Specific Gravity

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