Rhodochrosite and Staurolite Physical Properties

Rhodochrosite

Staurolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

3.7-3.8

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

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

1.6 Cleavage

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

Distinct on {010}

1.7 Mohs Hardness

3.5-4

7-7.5

1.8 Chemical Composition

MnCO₃

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Rhodochrosite and Staurolite Chemical Formula

While comparing Rhodochrosite and Staurolite 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 Staurolite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

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Rhodochrosite and Staurolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.