Marcasite and Chalcedony Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
4.80-4.90
2.55-2.70
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Cleavage
{010} Indistinct
Absent
Mohs Hardness
6-6.5
6.5-7
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO2
Marcasite and Chalcedony Chemical Formula
While comparing Marcasite and Chalcedony 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 Marcasite and Chalcedony chemical formula.
- Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Chalcedony- SiO2
Marcasite and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Marcasite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Marcasite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.