Andalusite and Simpsonite Physical Properties

Andalusite

Simpsonite

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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

3.05-3.21

Not Available

1.5 Fracture

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

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Good on {110}, poor on {100}

None

1.7 Mohs Hardness

7.5

7-7.5

1.8 Chemical Composition

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

Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Andalusite and Simpsonite Chemical Formula

While comparing Andalusite and Simpsonite 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 Simpsonite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

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Andalusite and Simpsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Simpsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Simpsonite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is Not Available whereas that of Simpsonite is Not Available.