Apatite and Leucite Physical Properties

Apatite

Leucite

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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

3.16-3.232.45-2.50

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

[0001] indistinct, [1010] indistinct

Poor on {110}

1.7 Mohs Hardness

55.5-6

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

KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apatite and Leucite Chemical Formula

While comparing Apatite and Leucite 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 Leucite 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 Leucite- KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apatite and Leucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Leucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Leucite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.45-2.50 whereas that of Leucite is 2.45-2.50.