Dolomite and Gahnite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Poorly soluble in dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
4.00-4.62
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, Uneven
Cleavage
Perfect on {10 1 1}, rhombohedral cleavage
Indistinct parting on [111]
Mohs Hardness
3.5-4
7.5-8
Chemical Composition
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Dolomite and Gahnite Chemical Formula
While comparing Dolomite and Gahnite 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 Dolomite and Gahnite chemical formula.
- Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Dolomite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dolomite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dolomite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Dolomite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.