Andalusite and Gaspeite Physical Properties

Andalusite

Gaspeite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.21

3.71

1.5 Fracture

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

Uneven

1.6 Cleavage

Good on {110}, poor on {100}

{10 1 1} Good

1.7 Mohs Hardness

7.5

4.5-5

1.8 Chemical Composition

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

(Ni,Mg,Fe++)CO3

Andalusite and Gaspeite Chemical Formula

While comparing Andalusite and Gaspeite 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 Gaspeite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Gaspeite- (Ni,Mg,Fe++)CO3

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Andalusite and Gaspeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Gaspeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Gaspeite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.71 whereas that of Gaspeite is 3.71.