Iolite and Marcasite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.7
4.80-4.90
Fracture
Not Available
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
Cleavage
3,1
{010} Indistinct
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
Mg2Al4Si5O18
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Iolite and Marcasite Chemical Formula
While comparing Iolite and Marcasite 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 Iolite and Marcasite chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Iolite and Marcasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.