Apatite and Bytownite Physical Properties

Apatite

Bytownite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.16-3.23

Conchoidal, Uneven, Conchoidal to uneven

[0001] indistinct, [1010] indistinct

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

Brittle

2.72-2.75

Uneven

Perfect on [001], good on [010], imperfect on [110]

6-6.5

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Apatite and Bytownite Chemical Formula

While comparing Apatite and Bytownite 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 Bytownite chemical formula.

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Apatite and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite Vs Bytownite during the identification of gemstone. Specific gravity of Apatite is whereas that of Bytownite is .