Carnallite and Apatite Physical Properties

Carnallite

Apatite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.63.16-3.23

1 7.18

1.5 Fracture

Violet, Conchoidal, Brittle, Conchoidal, Brittle

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

1.6 Cleavage

None

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

2.55

2 10

1.8 Chemical Composition

KMgCl3•6(H2O)

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

Carnallite and Apatite Chemical Formula

While comparing Carnallite 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 Carnallite and Apatite chemical formula.

Chemical formula of Carnallite- KMgCl3•6(H2O)
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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Carnallite and Apatite Specific Gravity

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