Periclase and Apatite Physical Properties

Periclase

Apatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.93.16-3.23

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

5.5-65

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Periclase and Apatite Chemical Formula

While comparing Periclase 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 Periclase and Apatite chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
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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Periclase and Apatite Specific Gravity

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