Apatite and Tugtupite Physical Properties

Apatite

Tugtupite

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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

3.16-3.232.30-2.60

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

{111} Imperfect

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

Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apatite and Tugtupite Chemical Formula

While comparing Apatite and Tugtupite 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 Tugtupite 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 Tugtupite- Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apatite and Tugtupite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Tugtupite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Tugtupite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.30-2.60 whereas that of Tugtupite is 2.30-2.60.