Apatite and Scheelite Physical Properties

Apatite

Scheelite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.23

5.9-6.3

1.5 Fracture

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven

1.6 Cleavage

[0001] indistinct, [1010] indistinct

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

1.7 Mohs Hardness

4.5-5

1.8 Chemical Composition

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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

Apatite and Scheelite Chemical Formula

While comparing Apatite and Scheelite 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 Apatite and Scheelite chemical formula.

Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apatite and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.