Annabergite and Howlite Physical Properties
Tenacity
Sectile
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.07
2.45-2.58
Fracture
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect on {010}, indistinct on {100} and {102}
None
Chemical Composition
Ni3(AsO4)2•8(H2O)
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Annabergite and Howlite Chemical Formula
While comparing Annabergite 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 Annabergite and Howlite chemical formula.
- Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Annabergite and Howlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Annabergite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.