Childrenite and Sillimanite Physical Properties
Tenacity
Not Available
Tough
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06-3.25
3.20-3.26
Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Splintery
Cleavage
Poor/indistinct on {100}
{010} perfect
Mohs Hardness
4.5-5
6-7.5
Chemical Composition
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Childrenite and Sillimanite Chemical Formula
While comparing Childrenite and Sillimanite 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 Sillimanite chemical formula.
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Childrenite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Childrenite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Childrenite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Childrenite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.