Apatite and Hexagonite Physical Properties

Apatite

Hexagonite

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2 Physical Properties

2.2 Tenacity

Not Available

Brittle

2.5 Solubility

Not Available

2.8 Durability

Not Available

2.10 Specific Gravity

3.16-3.232.98-3.03

1 7.18

1.4 Fracture

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

Uneven

1.8 Cleavage

[0001] indistinct, [1010] indistinct

[110] perfect; [010] distinct

1.12 Mohs Hardness

55-6

2 10

1.16 Chemical Composition

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

Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

Apatite and Hexagonite Chemical Formula

While comparing Apatite and Hexagonite 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 Hexagonite 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 Hexagonite- Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

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Apatite and Hexagonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Hexagonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Hexagonite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.98-3.03 whereas that of Hexagonite is 2.98-3.03.