Childrenite and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
3.06-3.25
1.77
Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Not Available
Cleavage
Poor/indistinct on {100}
Perfect on {10 1 0}
Mohs Hardness
4.5-5
2-2.5
Chemical Composition
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Childrenite and Ettringite Chemical Formula
While comparing Childrenite and Ettringite 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 Ettringite chemical formula.
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Childrenite and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Childrenite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Childrenite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Childrenite is 1.77 whereas that of Ettringite is 1.77.