Pargasite and Calcite Physical Properties

Pargasite

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.262.67-2.73

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{110} perfect

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

5-63

2 10

1.8 Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Pargasite and Calcite Chemical Formula

While comparing Pargasite and Calcite 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 Calcite chemical formula.

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

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Pargasite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.