Lazulite and Pargasite Physical Properties

Lazulite

Pargasite

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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

3.04-3.173.04-3.26

1 7.18

1.5 Fracture

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

Splintery, Brittle, Uneven

1.6 Cleavage

{001} Indistinct, {???} Indistinct

{110} perfect

1.7 Mohs Hardness

5.55-6

2 10

1.8 Chemical Composition

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

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Lazulite and Pargasite Chemical Formula

While comparing Lazulite and Pargasite 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 Pargasite 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 Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Lazulite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.