Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

S. Farooq ¹, N. Hasan ¹

Affiliations
1 Department of Geology, Aligarh Muslim University, Aligarh-202002, IN

Abstract

Surface indications of basemetal mineralization were detected in the granitic gneisses along the Gurji Stream near Askote in Pithoragarh district of Kumaun Himalaya. The sulfide minerals occur in the form of stringers and disseminations. Investigations reveal that the mineralization is hydrothermal in nature and is controlled by the structural patterns of the host rocks. Mineralogy of the altered zone and textural relationships of the sulfide minerals indicate a high temperature of the hydrothermal fluids. The similarities in the nature of sulfide mineralization, the mineral assemblages, paragenesis and associated wallrock alteration with the mineralized zone in low-grade schists at Brigaon near Askote suggest that the two mineralized zones are cogenetic.

Keywords

Basemetal, Sulfides, Mineralization, Himalaya, Uttar Pradesh.

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S. Farooq ¹, N. Hasan ¹

Affiliations
1 Department of Geology, Aligarh Muslim University, Aligarh-202 002, IN

Abstract

Surface indications of sulphide mineralization were noticed in the form of gossan bands outcropping as cellular, spongy and boxwork structures of limonite in the marble of Parsoi Formation of Mahakoshal Belt near 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 patterns 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, stringers and disseminations. Mineralogical assemblages and textural characteristics of the altered and sulphide zones indicate that mineralization is hypothermal in nature.

Keywords

Sulphide Mineralization, Mahakoshal Belt, Son-Narmada Lineament, Uttar Pradesh.

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