Lazulite and Pyrophyllite Physical Properties

Lazulite

Pyrophyllite

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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

3.04-3.172.65-2.90

1 7.18

1.5 Fracture

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

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

{001} Indistinct, {???} Indistinct

{001} Perfect

1.7 Mohs Hardness

5.5Not Available

2 10

1.8 Chemical Composition

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

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Lazulite and Pyrophyllite Chemical Formula

While comparing Lazulite and Pyrophyllite 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 Pyrophyllite 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 Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lazulite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.