Childrenite and Calcite Physical Properties

Childrenite

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.06-3.25

2.67-2.73

1.5 Fracture

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

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

1.6 Cleavage

Poor/indistinct on {100}

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

1.7 Mohs Hardness

4.5-5

1.8 Chemical Composition

(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

CaCO 3Ulrich Henn and Claudio C.

Childrenite and Calcite Chemical Formula

While comparing Childrenite 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 Childrenite and Calcite chemical formula.

Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Childrenite and Calcite Specific Gravity

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