Gaylussite and Howlite Physical Properties
Tenacity
Not Available
Not Available
Solubility
decomposes in water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.93-1.99
2.45-2.58
Fracture
Conchoidal, Conchoidal, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
perfect [110]
None
Chemical Composition
Na2Ca(CO3)2•5(H2O)
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gaylussite and Howlite Chemical Formula
While comparing Gaylussite 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 Gaylussite and Howlite chemical formula.
- Chemical formula of Gaylussite- Na2Ca(CO3)2•5(H2O)
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gaylussite and Howlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gaylussite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gaylussite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Gaylussite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.