marcasite

Black cub powder(s) [LID94] [STR93]The natural pyrite consists of yellow cubic crystals; density 5.02g/cm3; hardness 6.3 Mohs; melts at 1,171°C; soluble in dilute acids. The mineral marcasite constitutes yellow rhombic crystals; density 4.87g/cm3; transforms to more stable pyrite form when heated at 480°C; insoluble in dilute acids. Both forms dissolve in concentrated nitric acid and are insoluble in water (4.9 mg/L at 20°C).

Iron disulfide is found in nature in two different crystal forms, as the minerals iron pyrite and marcasite. The mineral pyrite is mostly used for the production of iron and sulfur. Iron disulfide also is used to produce sulfuric acid, although the latter is commercially made by other processes that are more economical.

Molecular Weight:119.98
Hydrogen Bond Acceptor Count:2
Exact Mass:119.879078
Monoisotopic Mass:119.879078
Topological Polar Surface Area:2
Heavy Atom Count:3
Complexity:2.8
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes