Apatite and Nickeline Physical Properties

Apatite

Nickeline

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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

3.16-3.23Not Available

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

[0001] indistinct, [1010] indistinct

{1010} Imperfect, {0001} Imperfect

1.7 Mohs Hardness

55-5.5

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

Not Available

Apatite and Nickeline Chemical Formula

While comparing Apatite and Nickeline 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 Nickeline 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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Apatite and Nickeline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Nickeline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Nickeline Optical Properties during the identification of gemstone. Specific gravity of Apatite is Not Available whereas that of Nickeline is Not Available.