Pargasite and Phenakite Physical Properties

Pargasite

Phenakite

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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

3.04-3.262.90-2.98

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

1.6 Cleavage

{110} perfect

Distinct on {11 2 0}, imperfect on {10 1 1}

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

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

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

Pargasite and Phenakite Chemical Formula

While comparing Pargasite and Phenakite 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 Phenakite chemical formula.

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

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Pargasite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.