Contribution of geological and geophysical 3D models to the deve lopment of the polymetallic deposit of Draa Sfar (Hercinian Massif of Central Jebilets, Morocco
DOI:
https://doi.org/10.3989/egeol.40366.138Keywords:
Draa Sfar, Massif sulphide, Polymetallic, Hercynian, 3D Model geophysical and geological, Jebilet, MoroccoAbstract
The compilation of geological and geophysical (magnetic and gravity) and the development of the corresponding three-dimensional models have allowed the recognition of the deep mineralized structures, and helping the reopening of the mining after 23 years of inactivity. Geological resources were increased tenfold in three years to reach 10Mt at 5.39% Zn, 1.94% Pb and 0.34% Cu. This exploration methodology based on three-dimensional geological and geophysical models become increasingly used in mining exploration strategy after the improvement in the computing capacities of the modelling tools. The results from this study could be helpful for the development of mining massive sulphide deposits in the Jebilet province of Guemassa and by extension to other deposits with similar geological and metallogenic characteristics.
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References
Aarab, E.M. 1995. Genèse et différentiation d’un magma tholéiitique en domaine extensif intracontinental: l’exemple du magmatisme pré-orogénique des Jebilet (Maroc, Hercynien). Thèse de docteur d’état. Université Cadi ayyad Marrakech, 253 pp.
Belkabir, A.; Gibson, H.; Marcoux, E.; Lenz, D. & Rziki, S. (2008). Geology and Wall-Rock Alteration at the Hercynian Draa Sfar Zn-Pb-Cu deposit, Morocco. Ore Geology Reviews, 33: 280-306. http://dx.doi.org/10.1016/j.oregeorev.2007.03.001
Ben aissi, L.; El Boukhari, A.; Hibti, M.; Harfi, M.; Maacha, L. & Zinbi, Y. (2005). Altération hydrothermale et déformation ductile des roches volcaniques acides associées au gisement de Draa Sfar Jebilet centrales, Maroc. Estudios géologicos, 61: 147-160.
Ben aissi, L. (2001). Gisement de Draa Sfar: Etude géologique et métallogénique des minéralisations et des altérations hydrothermales associées, Jebilet centrales, Maroc. Thèse 3éme cycle, Université Cadi ayyad Marrakech, 82 pp.
Bernard, A.J.; Maier, O.W. & Mellal, A. (1988). Aperçu sur les amas sulfurés massifs des hercynides marocaines. Mineralium deposita, 23: 104-114. http://dx.doi.org/10.1007/BF00206659
Bédard, K.; Lachance, B.; Kirkwood, D.; Beaudoin, G. & Pouliot, J. (2006). Développement d’un prototype de requêtes topologiques 3D et application au gîte de Cu-Ag-Pb-zn de Transfiguration, Canada. Rapport final projet Divex SC20, Université Laval, Québec, 12 pp.
Bordonaro, M. (1983). Tectonique et pétrographie du district à pyrrhotite de Kettara (paléozoïque des Jebilet, Maroc). Thèse 3éme cycle, Université Louis Pasteur, Strasbourg, 132 pp.
Dagbert, M. & Harfi, M. (2002). Ressource estimation for the Draa Sfar South polymetallic deposit. Exploration and Mining Geology, 11: 99-112. http://dx.doi.org/10.2113/11.1-4.99
Essaifi, A. (1995). Relations entre magmatisme, déformation et altération hydrothermale, l’exemple des Jebilet Centrales (Hercynien, Maroc). Mémoires Géosciences Rennes, 66: 340.
Essaifi, A.; Potrel, A.; Capdevila, R. & Lagarde, JL. (2003). Datation U-Pb: âge de mise en place du magmatisme bimodal des Jebilet centrales (chaîne Varisque, Maroc). Comptes Rendus Géoscience, 335: 193-203. http://dx.doi.org/10.1016/S1631-0713(03)00030-0
Gibson, H.L.; Brunet, S.; Belkabir, A.; Lentz, D. & Marcoux, E. (2005). The spectrum of Volcano-sédimentary environments hosting volcanogenic massive sulphide deposits of the Visean, Jebilet and Guemassa Terrains, Morocco. Canadian Institute of Mining and Metallurgy, Annual Meeting, Toronto, Ontario, Program with abstracts, p.28.
Hibti, M. (2001). Les amas sulfurés des Guemassa et des Jebilet (Meseta Sud Occidentale, Maroc): Témoins de l’hydrothermalisme précoce dans le bassin mésétien. Thèse de Doctorat, Université Cadi Ayyad, Marrakech, 301 pp.
Huvelin, P. (1977). Etude géologique et gîtologique du massif hercynien des Jebilet (Maroc occidental). Notes Mémoires Services Géologiques Maroc, 232 bis: 1-307.
Marcoux, E.; Belkabir, A.; Harold, L.G.; David, L. & Gilles, R. (2008). Draa Sfar, Morocco: a visiéen (331Ma) pyrrhotite-rich, polymetallic volcanogenic massive sulphide deposit in a Hercynian sedimentdominant terrane. Ore Geology Reviews, 33: 307-328. http://dx.doi.org/10.1016/j.oregeorev.2007.03.004
Moreno, C.; Alansari, A.; Sáez, R.; Almodóvar, G.; González, F.; Toscano, M.; Velasco, F.; Playford, G.; Bajddi, A.; Rziki, S. & Zouhair, M. (2008). Age and depositional environment of the Draa Sfar massive sulphide deposit, Morocco. Mineralium deposita, 43: 891-911. http://dx.doi.org/10.1007/s00126-008-0199-x
Rziki, S. (2006). Contribution à l’étude géologique du gisement polymétallique de Draa Sfar, Jebilet centrales, Maroc. Mémoire de fin d’études supérieures spécialisées, Université Cadi ayyad, Faculté des sciences et technique Guéliz, Marrakech, 108 pp.
Souaré, A.T. (1988). Contribution à l’étude des amas sulfurés du district des Jebilet centrales et de leurs altérations supergènes, (chapeau de fer) comparaison avec les minéralisations sulfurées d’Agouim (Haut Atlas, Maroc). Thèse de 3°cycle. Université Cadi ayyad, Marrakech, 273pp.
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