Apatite and Hibonite Physical Properties

Apatite

Hibonite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.23

3.84

1.5 Fracture

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

Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

[0001] indistinct, [1010] indistinct

{0001} good, {10 1 0} parting

1.7 Mohs Hardness

7.5-8

1.8 Chemical Composition

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

(Ca,Ce)(Al,Ti,Mg)12O19

Apatite and Hibonite Chemical Formula

While comparing Apatite and Hibonite 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 Hibonite 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 Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19

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Apatite and Hibonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Hibonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Hibonite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.84 whereas that of Hibonite is 3.84.