Pargasite and Willemite Physical Properties

Pargasite

Willemite

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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

3.04-3.263.89-4.18

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

{110} perfect

{0001}, {11 2 0} imperfect

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)

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pargasite and Willemite Chemical Formula

While comparing Pargasite and Willemite 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 Willemite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pargasite and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Willemite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.89-4.18 whereas that of Willemite is 3.89-4.18.