Rhodochrosite and Pargasite Physical Properties

Rhodochrosite

Pargasite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

3.04-3.26

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Splintery, Brittle, Uneven

1.6 Cleavage

On {10 1 1} perfect; parting on {10 1 2}

{110} perfect

1.7 Mohs Hardness

3.5-4

5-6

1.8 Chemical Composition

MnCO₃

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

Rhodochrosite and Pargasite Chemical Formula

While comparing Rhodochrosite 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 Rhodochrosite and Pargasite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Pargasite Specific Gravity

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