SULFIDE MINERALIZATION IN THE PARSOI FORMATION OF MAHAKOSHAL GROUP, SOUTHERN MIRZAPUR DISTRICT, UP

Surface indications of sulphide mineralization were noticed in the for m of gossan bands outcropping as cellular, spongy and boxwork structur es of limonite in the marble of Parsoi Formation of Mahakoshal Belt ne ar Ningha village in southern Mirzapur district. Investigations reveal that mineralization is localized along fractures, shears and zones of brecciation in the marble, and is controlled by the structural patter ns of the host rocks. Sulphide mineral assemblage consists of pyrite, pyrrhotite, cobaltite, chalcopyrite, sphalerite, galena, proustite and pyrargyrite. The sulphides are found to occur in the form of veins, s tringers and disseminations. Mineralogical assemblages and textural ch aracteristics of the altered and sulphide zones indicate that minerali zation is hypothermal in nature.