Childrenite and Vivianite Physical Properties

Childrenite

Vivianite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.06-3.252.64-2.70

1 7.18

1.5 Fracture

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

(e.g. graphite).

1.6 Cleavage

Poor/indistinct on {100}

{010} Perfect

1.7 Mohs Hardness

4.5-5Not Available

2 10

1.8 Chemical Composition

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

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Childrenite and Vivianite Chemical Formula

While comparing Childrenite and Vivianite 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 Vivianite chemical formula.

Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Childrenite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Childrenite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Childrenite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Childrenite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.