Gypsum and Pargasite Physical Properties

Gypsum

Pargasite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.403.04-3.26

1 7.18

1.5 Fracture

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

Splintery, Brittle, Uneven

1.6 Cleavage

Perfect on {010}, distinct on {100}

{110} perfect

1.7 Mohs Hardness

25-6

2 10

1.8 Chemical Composition

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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

Gypsum and Pargasite Chemical Formula

While comparing Gypsum and Pargasite 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 Gypsum and Pargasite chemical formula.

Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Gypsum and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gypsum and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.