Howlite and Dolomite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Poorly soluble in dilute HCl
Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
2.80-2.95
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None
Perfect on {10 1 1}, rhombohedral cleavage
Mohs Hardness
3-3.5
3.5-4
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Howlite and Dolomite Chemical Formula
While comparing Howlite and Dolomite 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 Dolomite chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Howlite and Dolomite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.