Contexte géologique, hydrogéologique et métallogénique du gisement de Zinc de Chaâbet-El-Hamra à Ain Azel – wilaya de Sétif-, nord oriental Algérien

Abstract

The deposit Zinc Chaâbet-El-Hamra, returned to evaluation in 1991 following the loss of 2 June 1990, is located 50 Km south of Setif in the region of Ain Azel and 7.5 km from the mine Kherzet Youssef, in geological entire para-Aboriginal and Aboriginal Hodnéen. This deposit is part of the District to Pb-Zn metallogenic Mountains Hodna belongs to block Ain Mlila which includes three structures lifting shaped Horsts anticlines and is associated with Horst Rahbet. The mining and processing of the data shows that the aquifer Hauterivien this deposit is a free layer that does not get a strong meteoric supply and hydrodynamic characteristics calculated based on a battery of dewatering wells allow us to Speeds of a simulation of folding under the water level mineralization. Moreover, the hydrochemical study confirmed the non-pollution of the aquifer by heavy metals from zinc mineralization of the deposit. On the basis of a petrographic study of the banking dolomites and observations as hydrothermal alteration view field, he found that this deposit closer to the Mississippi Valley type. As training model to deposit model Pélissonnier paléinsulaire is the closest model.