Howlite and Hanksite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Readily soluble in water
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.45-2.58
  
2.562
  
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Uneven, Conchoidal, Brittle
  
Cleavage
None
  
Good on {0001}
  
Mohs Hardness
3-3.5
  
3-3.5
  
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
KNa22(SO4)9(CO3)2Cl
  
Howlite and Hanksite Chemical Formula
While comparing Howlite and Hanksite 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 Hanksite chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Hanksite- KNa22(SO4)9(CO3)2Cl
Howlite and Hanksite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Hanksite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Hanksite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 2.562 whereas that of Hanksite is 2.562.