Calcite and Childrenite Physical Properties

Calcite

Childrenite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.733.06-3.25

1 7.18

1.5 Fracture

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

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

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

Poor/indistinct on {100}

1.7 Mohs Hardness

34.5-5

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Calcite and Childrenite Chemical Formula

While comparing Calcite and Childrenite 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 Childrenite chemical formula.

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

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Calcite and Childrenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.