Riebeckite and Calcite Physical Properties

Riebeckite

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

3.28-3.442.67-2.73

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

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

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

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

1.7 Mohs Hardness

5.0-6.03

2 10

1.8 Chemical Composition

Not Available

CaCO 3Ulrich Henn and Claudio C.

Riebeckite and Calcite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Calcite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Riebeckite and Calcite Specific Gravity

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