Almandine and Rhodochrosite Physical Properties

Almandine

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

3.95-4.30

3.0-3.3

1.5 Fracture

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

Uneven, Conchoidal, Conchoidal to uneven, Brittle

1.6 Cleavage

none

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

1.7 Mohs Hardness

7-7.5

3.5-4

1.8 Chemical Composition

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

MnCO₃

Almandine and Rhodochrosite Chemical Formula

While comparing Almandine 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 Almandine and Rhodochrosite chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Rhodochrosite- MnCO₃

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Almandine and Rhodochrosite Specific Gravity

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