Formation And Distribution Of Pyrite

Pyrite, a common sulfide mineral in nature, is closely related to various geological processes. It occurs widely in various rocks and ores, including coal seams, and is considered the "king of sulfides" in the Earth's crust. Specifically, pyrite forms in various ways: in igneous rocks, it occurs as fine disseminated particles, a product of post-magmatic hydrothermal activity; in contact metasomatic deposits, pyrite often coexists with other sulfides, forming in the later stages of hydrothermal activity; and in hydrothermal deposits, pyrite coexists with other sulfides, oxides, and quartz, sometimes forming massive pyrite accumulations. Pyrite is also found in sedimentary rocks, coal-bearing strata, and sedimentary deposits, occurring as lumps, nodules, or lenses. Pyrite in metamorphic rocks is often a product of metamorphism.