Calcite and Creedite Physical Properties

Calcite

Creedite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.73

2.70

1.5 Fracture

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

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

1.6 Cleavage

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

Perfect on {100}

1.7 Mohs Hardness

4.5

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Calcite and Creedite Chemical Formula

While comparing Calcite and Creedite 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 Calcite and Creedite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Calcite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.70 whereas that of Creedite is 2.70.