Opal and Childrenite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Soluble
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.06-3.25
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Cleavage
None
Poor/indistinct on {100}
Mohs Hardness
5-6.5
4.5-5
Chemical Composition
SiO2 · nH2O
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Opal and Childrenite Chemical Formula
While comparing Opal 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 Opal and Childrenite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Opal and Childrenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.