Rhodochrosite and Poudretteite Physical Properties

Rhodochrosite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

2.51-2.53

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Conchoidal, Splintery

1.6 Cleavage

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

None

1.7 Mohs Hardness

3.5-4

1.8 Chemical Composition

MnCO₃

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Rhodochrosite and Poudretteite Chemical Formula

While comparing Rhodochrosite and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.