Rhodochrosite and Gahnite Physical Properties

Rhodochrosite

Gahnite

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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

4.00-4.62

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Conchoidal, Uneven

1.6 Cleavage

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

Indistinct parting on [111]

1.7 Mohs Hardness

3.5-4

7.5-8

1.8 Chemical Composition

MnCO₃

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Rhodochrosite and Gahnite Chemical Formula

While comparing Rhodochrosite and Gahnite 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 Gahnite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.