Scheelite and Andalusite Physical Properties

Scheelite

Andalusite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

5.9-6.33.05-3.21

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Subconchoidal, Splintery

Cleavage

On {101}, distinct; on {112}, interrupted; on {001}, indistinct

Good on {110}, poor on {100}

Mohs Hardness

4.5-57.5

2 10

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Chemical Composition

CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Scheelite and Andalusite Chemical Formula

While comparing Scheelite 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 Scheelite and Andalusite chemical formula.

Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Scheelite and Andalusite Specific Gravity

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