Glaucophane and Andalusite Physical Properties

Glaucophane

Andalusite

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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

3-3.153.05-3.21

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Good on [110] and on [001]

Good on {110}, poor on {100}

1.7 Mohs Hardness

6.0-6.57.5

2 10

1.8 Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2

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

Glaucophane and Andalusite Chemical Formula

While comparing Glaucophane and Andalusite 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 Andalusite chemical formula.

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

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Glaucophane and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Glaucophane and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Glaucophane and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Glaucophane is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.