Pargasite and Nosean Physical Properties

Pargasite

Nosean

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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

3.04-3.262.30-2.40

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

{110} perfect

{110} Perfect

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

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

Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)

Pargasite and Nosean Chemical Formula

While comparing Pargasite and Nosean 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 Nosean chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Nosean- Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)

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Pargasite and Nosean Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Nosean Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.30-2.40 whereas that of Nosean is 2.30-2.40.