Rhodochrosite and Lazurite Physical Properties

Rhodochrosite

Lazurite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

2.75

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

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

Imperfect on {110}

1.7 Mohs Hardness

3.5-4

5.5

1.8 Chemical Composition

MnCO₃

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Rhodochrosite and Lazurite Chemical Formula

While comparing Rhodochrosite and Lazurite 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 Lazurite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Rhodochrosite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 2.75 whereas that of Lazurite is 2.75.