Hauyne and Andalusite Physical Properties

Hauyne

Andalusite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Gelatinises in acids

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.4-2.53.05-3.21

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle

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

1.6 Cleavage

Distinct on {110}

Good on {110}, poor on {100}

1.7 Mohs Hardness

5-67.5

2 10

1.8 Chemical Composition

(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2

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

Hauyne and Andalusite Chemical Formula

While comparing Hauyne 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 Hauyne and Andalusite chemical formula.

Chemical formula of Hauyne- (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Hauyne and Andalusite Specific Gravity

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