[ Contribution de la géochimie des chapeaux de fer à la prospection des amas sulfurés volcanogènes : Cas du gisement polymétallique de Draa Sfar, Jebilets centrales, Maroc ]
Volume 24, Issue 2, September 2018, Pages 559–573
Fouad Lotfi1 and S. Brunet2
1 Université Ibn Zohr, Faculté Polydisciplinaire de Taroudant, Hay El Mohammadi (Lastah), B.P : 271, 83 000 Taroudant, Morocco
2 Managen, Casablanca, Morocco
Original language: French
Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The central Jebilets located to the southwest of the Moroccan meseta represent a massive VMS province whose Draa sfar deposit is one of them. The latter predominantly pyrrhotite, contains minerals of the base metals, enclosed in the Saghlef series attributed to the higher visean. The area of Draa sfar is materialized on the surface by the development of gossan with oxides and hydroxides of iron (hematite, goethite, limonite, malachite ...), and shows an orientation NS in the direction of the ore body. The analyzed elements such as Ag, As, Bi, Sn and Te in addition to the desired base metals, made it possible to identify the gossan directly linked to the Draa sfar deposit, and to clearly identify its location. They can be used as a guide to prospecting for gossan and these results can be applied to all gossan around the Draa Sfar area in the central Jebilets and its extrapolation to all Hercynian terrains.
Author Keywords: Central Jebilets, Draa Sfar, Gossan, exploration, base metal.
Volume 24, Issue 2, September 2018, Pages 559–573
Fouad Lotfi1 and S. Brunet2
1 Université Ibn Zohr, Faculté Polydisciplinaire de Taroudant, Hay El Mohammadi (Lastah), B.P : 271, 83 000 Taroudant, Morocco
2 Managen, Casablanca, Morocco
Original language: French
Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The central Jebilets located to the southwest of the Moroccan meseta represent a massive VMS province whose Draa sfar deposit is one of them. The latter predominantly pyrrhotite, contains minerals of the base metals, enclosed in the Saghlef series attributed to the higher visean. The area of Draa sfar is materialized on the surface by the development of gossan with oxides and hydroxides of iron (hematite, goethite, limonite, malachite ...), and shows an orientation NS in the direction of the ore body. The analyzed elements such as Ag, As, Bi, Sn and Te in addition to the desired base metals, made it possible to identify the gossan directly linked to the Draa sfar deposit, and to clearly identify its location. They can be used as a guide to prospecting for gossan and these results can be applied to all gossan around the Draa Sfar area in the central Jebilets and its extrapolation to all Hercynian terrains.
Author Keywords: Central Jebilets, Draa Sfar, Gossan, exploration, base metal.
Abstract: (french)
Les Jebilets centrales situées au sud-ouest de la meseta marocaine représentent une province métallifère à amas sulfurés massifs dont le gisement de Draa sfar en fait partie. Ce dernier à prédominance de pyrrhotite, renferme des minéraux des métaux de base, est encaissé dans la série de Saghlef attribué au viséen supérieur. Le secteur de Draa sfar est matérialisé en surface par le développement d’un chapeau de fer à oxydes et hydroxydes de fer (hématite, goethite, limonite, malachite…), et montre une orientation NS selon la direction du corps minéralisé en profondeur. Les éléments analysés tel que Ag, As, Bi, Sn et Te en plus des métaux de base recherchés, ont permis de bien identifier les chapeaux de fer liés directement au gisement de Draa sfar, et de bien cerner son emplacement. Ils peuvent être employé comme guide de prospection des chapeaux de fer et ces résultats peuvent être appliqués sur l’ensemble des indices ferrugineux avoisinant le secteur de Draa Sfar dans les Jebilets centrales voir son extrapolation vers l’ensemble des terrains hercyniens.
Author Keywords: Jebilets centrales, Draa Sfar, chapeau de fer, exploration, métaux de base.
How to Cite this Article
Fouad Lotfi and S. Brunet, “Contribution of the geochemistry of gossan to the prospection of volcanogenic sulphide deposits : Case of the polymetallic deposit of Draa Sfar, Central Jebilets, Morocco,” International Journal of Innovation and Applied Studies, vol. 24, no. 2, pp. 559–573, September 2018.
