Lazulite and Bytownite Physical Properties

Lazulite

Bytownite

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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

3.04-3.172.72-2.75

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

{001} Indistinct, {???} Indistinct

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

1.7 Mohs Hardness

5.56-6.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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

Lazulite and Bytownite Chemical Formula

While comparing Lazulite 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 Lazulite and Bytownite chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Lazulite and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.