Rhodochrosite and Dravite Physical Properties

Rhodochrosite

Dravite

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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

3.03-3.18

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

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

1.6 Cleavage

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

{???} Indistinct

1.7 Mohs Hardness

3.5-4

7-7.5

1.8 Chemical Composition

MnCO₃

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Rhodochrosite and Dravite Chemical Formula

While comparing Rhodochrosite and Dravite 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 Dravite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Rhodochrosite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.