Erythrite and Howlite Physical Properties
Tenacity
Sectile
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06
2.45-2.58
Fracture
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect on {010}; poor on {100} and { 1 02}.
None
Mohs Hardness
Not Available
3-3.5
Chemical Composition
Co3(AsO4)2•8(H2O)
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Erythrite and Howlite Chemical Formula
While comparing Erythrite and Howlite 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 Erythrite and Howlite chemical formula.
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Erythrite and Howlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Erythrite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.