Rhodochrosite and Gypsum Physical Properties

Rhodochrosite

Gypsum

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

2.20-2.40

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

3.5-4

1.8 Chemical Composition

MnCO₃

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Rhodochrosite and Gypsum Chemical Formula

While comparing Rhodochrosite and Gypsum 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 Gypsum chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Rhodochrosite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.