Rhodochrosite and Periclase Physical Properties

Rhodochrosite

Periclase

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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

3.0-3.33.7-3.9

1 7.18

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Conchoidal, Brittle

1.6 Cleavage

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

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

3.5-45.5-6

2 10

1.8 Chemical Composition

MnCO₃

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Rhodochrosite and Periclase Chemical Formula

While comparing Rhodochrosite and Periclase 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 Periclase chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Rhodochrosite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.