Thulite and Apatite Physical Properties

Thulite

Apatite

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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

3.13.16-3.23

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Perfect {010} imperfect {100}

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

6-75

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Thulite and Apatite Chemical Formula

While comparing Thulite 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 Thulite and Apatite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
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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Thulite and Apatite Specific Gravity

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