Apatite and Pyrargyrite Physical Properties

Apatite

Pyrargyrite

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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

3.16-3.235.85

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

[0001] indistinct, [1010] indistinct

Distinct on {10 1 1}, imperfect on {01 1 2}

1.7 Mohs Hardness

52.5-3

2 10

1.8 Chemical Composition

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

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apatite and Pyrargyrite Chemical Formula

While comparing Apatite and Pyrargyrite 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 Pyrargyrite 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 Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apatite and Pyrargyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Pyrargyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Pyrargyrite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 5.85 whereas that of Pyrargyrite is 5.85.