Contribution à l’étude des minéralisations du gisement d’Ighil Touk région de Tadergount (les Babors, wilaya de Bejaia).

Abstract

The Ighil Touk deposit, part of the Tadergount area, is located on the right bank of Oued Agrioun at the exit of the Chaabet Lakhra gorge. It is part of the chain of the Babors (Eastern Babors), it is located on the northwest flank of Adrar mellal. It was set up between two sub-units: Ighzer Ouftis (Erragune Unit) in the North and Adrar Amellal (Unit of the Babors) in the South separated by a vertical sub-E-W fault. The mineralization has settled in the limestones and dolomitic limestones of Lias, it is represented by two parageneses;  The first paragenesis: represented by: gray copper, blende, fibrous-radiated barytes and automorphic (hexagonal) quartz,  The second paragenesis: represented by: schalenblende, massive barite and xenomorphic quartz.Downstream of the deposit, an outcrop of a green rock that is a highly altered and mineralized doleritic texture has been identified not previously mapped, the microscopic study shows that this rock has a grainy texture composed of pyroxene phenocrysts, Plagioclase laths and rarely biotite and alteration minerals such as chlorite and sericite. As for metallic mineralization, it is represented by disseminated Martite.The primary (protore) mineralization of the iron hat of Ighil Touk may be of hydrothermal origin but to arrive at the origin of the hydrothermal waters if they are meteoric or they are related to the ascent of the Triassic or to the setting in Place of the green rock located downstream of the deposit, an in-depth study must be established.Once the mineralization took place, it was exposed to weathering by giving birth to the iron hat.