Rhodochrosite and Neptunite Physical Properties

Rhodochrosite

Neptunite

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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

3.19-3.23

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

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

{110} good

1.7 Mohs Hardness

3.5-4

5-6

1.8 Chemical Composition

MnCO₃

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

Rhodochrosite and Neptunite Chemical Formula

While comparing Rhodochrosite and Neptunite 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 Neptunite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.