Childrenite and Common Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06-3.25
1.98-2.50
Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
Poor/indistinct on {100}
Not Available
Mohs Hardness
4.5-5
5.5-6.5
Chemical Composition
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Childrenite and Common Opal Chemical Formula
While comparing Childrenite and Common Opal 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 Common Opal chemical formula.
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Childrenite and Common Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Childrenite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Childrenite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Childrenite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.