Pargasite and Pectolite Physical Properties

Pargasite

Pectolite

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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

3.04-3.262.74-2.90

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Uneven, Gemstones (2009), Splintery

1.6 Cleavage

{110} perfect

Perfect on {100} and {001}

1.7 Mohs Hardness

5-64.5-5

2 10

1.8 Chemical Composition

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

Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Pargasite and Pectolite Chemical Formula

While comparing Pargasite and Pectolite 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 Pectolite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

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Pargasite and Pectolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Pectolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Pectolite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.74-2.90 whereas that of Pectolite is 2.74-2.90.