Afghanite and Rhodochrosite Physical Properties

Afghanite

Rhodochrosite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

3.0-3.3

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle

Uneven, Conchoidal, Conchoidal to uneven, Brittle

1.6 Cleavage

Perfect {10 1 0}

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

1.7 Mohs Hardness

5.5-6

3.5-4

1.8 Chemical Composition

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

MnCO₃

Afghanite and Rhodochrosite Chemical Formula

While comparing Afghanite and Rhodochrosite 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 Afghanite and Rhodochrosite chemical formula.

Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Rhodochrosite- MnCO₃

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Afghanite and Rhodochrosite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Rhodochrosite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Rhodochrosite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.0-3.3 whereas that of Rhodochrosite is 3.0-3.3.