Rhodochrosite and Ettringite Physical Properties

Rhodochrosite

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.31.77

1 7.18

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Not Available

1.6 Cleavage

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

Perfect on {10 1 0}

1.7 Mohs Hardness

3.5-42-2.5

2 10

1.8 Chemical Composition

MnCO₃

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Rhodochrosite and Ettringite Chemical Formula

While comparing Rhodochrosite and Ettringite 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 Ettringite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 1.77 whereas that of Ettringite is 1.77.