Vivianite and Childrenite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.64-2.70
3.06-3.25
Fracture
(e.g. graphite).
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Cleavage
{010} Perfect
Poor/indistinct on {100}
Mohs Hardness
Not Available
4.5-5
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Vivianite and Childrenite Chemical Formula
While comparing Vivianite 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 Vivianite and Childrenite chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Vivianite and Childrenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.