Rhodochrosite and Grandidierite Physical Properties

Rhodochrosite

Grandidierite

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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

2.85-3.00

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

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

Perfect

1.7 Mohs Hardness

3.5-4

7.5

1.8 Chemical Composition

MnCO₃

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Rhodochrosite and Grandidierite Chemical Formula

While comparing Rhodochrosite and Grandidierite 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 Grandidierite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Rhodochrosite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.