Periclase and Calcite Physical Properties

Periclase

Calcite

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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

3.7-3.92.67-2.73

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

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

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

5.5-63

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

CaCO 3Ulrich Henn and Claudio C.

Periclase and Calcite Chemical Formula

While comparing Periclase and Calcite 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 Periclase and Calcite chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Periclase and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Periclase and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Calcite Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.67-2.73 whereas that of Calcite is 2.67-2.73.