Childrenite and Vivianite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06-3.25
2.64-2.70
Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
(e.g. graphite).
Cleavage
Poor/indistinct on {100}
{010} Perfect
Mohs Hardness
4.5-5
Not Available
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.
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.