Pargasite and Lazulite Physical Properties

Pargasite

Lazulite

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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

3.04-3.263.04-3.17

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

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

1.6 Cleavage

{110} perfect

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

5-65.5

2 10

1.8 Chemical Composition

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

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

Pargasite and Lazulite Chemical Formula

While comparing Pargasite and Lazulite 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 Pargasite and Lazulite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Pargasite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.