Vivianite and Rhodochrosite Physical Properties

Vivianite

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

2.64-2.703.0-3.3

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Conchoidal, Conchoidal to uneven, Brittle

1.6 Cleavage

{010} Perfect

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

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

MnCO₃

Vivianite and Rhodochrosite Chemical Formula

While comparing Vivianite 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 Vivianite and Rhodochrosite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Rhodochrosite- MnCO₃

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Vivianite and Rhodochrosite Specific Gravity

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