Pyrrhotite and Apatite Physical Properties

Pyrrhotite

Apatite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.58-4.653.16-3.23

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Absent

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

3.5-4.55

2 10

1.8 Chemical Composition

Not Available

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

Pyrrhotite and Apatite Chemical Formula

While comparing Pyrrhotite and Apatite 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 Pyrrhotite and Apatite 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

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Pyrrhotite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrrhotite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrrhotite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Pyrrhotite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.