Howlite and Childrenite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
3.06-3.25
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Cleavage
None
Poor/indistinct on {100}
Mohs Hardness
3-3.5
4.5-5
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Howlite and Childrenite Chemical Formula
While comparing Howlite 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 Howlite and Childrenite chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Howlite and Childrenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.