Halite and Apatite Physical Properties

Halite

Apatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Water-soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.173.16-3.23

1 7.18

1.5 Fracture

Conchoidal, Brittle, Metallic

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

1.6 Cleavage

Perfect {001}, three directions cubic

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

2.0-2.55

2 10

1.8 Chemical Composition

NaCl

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

Halite and Apatite Chemical Formula

While comparing Halite 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 Halite and Apatite chemical formula.

Chemical formula of Halite- NaCl
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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Halite and Apatite Specific Gravity

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