Apatite and Lepidolite Physical Properties

Apatite

Lepidolite

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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

3.16-3.232.80-2.90

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

{001} perfect

1.7 Mohs Hardness

52.5

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

Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

Apatite and Lepidolite Chemical Formula

While comparing Apatite and Lepidolite 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 Lepidolite 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 Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

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Apatite and Lepidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Lepidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Lepidolite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.80-2.90 whereas that of Lepidolite is 2.80-2.90.