Said ILMEN
@uiz.ac.ma
Polydisciplinary Faculty of Ouarzazate
Ibn Zohr University
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Said Ilmen, Abdelkhalek Alansari, Abdel-Ali Kharis, Zaineb Hajjar, Bouchra Baidada, Amine Bajddi, and Lhou Maacha
Dnipro University of Technology
Purpose. In this paper, we discuss the genetic model and emphasize many pending issues on the carbonate replacement textures of the Amensif Zn-Pb-Cu-Ag±Au-Bi deposit (the Western High Atlas, Morocco), the source of metal and the possible contribution of the Azegour granite to this ore genesis. Methods. This study is based on geological mapping, drill core and petrography analysis in combination with ICP-AES, XRD, and SEM data. Findings. The detailed mineralogy consists mainly of sulfides and sulfosalts. The main ore minerals include arsenopyrite, pyrite, sphalerite, chalcopyrite, galena and bismuthinite. Mineral inclusions related to isomorphic sulfosalts are found in galena and/or chalcopyrite. They include matildite, galenobismutite, pavonite, cosalite, schirmerite, krupkaite, ramdohrite, wittichenite, emplectite, luzonite, gustavite, hedleyite, krennerite, wittite, freibergite, tetrahedrite, tennantite and native bismuth. The supergene minerals are anglesite, covellite, malachite, azurite and goethite. In addition, specific replacements are observed between dolomites and sulfides, indicating an interaction between hydrothermal fluid and host rocks. Four ore stages have been identified based on the relationship between mineral phases and ore-forming conditions. The results of this study indicate that Ag and Au precipitation is controlled by the Bi-Te-Pb-S system, while enrichment in Bi, Te and Se sulfosalts and Bi-telluride indicates a magmatic source of the ore-forming fluid. Originality. The study delves into the genetic model of the Amensif Zn-Pb-Cu-Ag±Au-Bi deposit in the Western High Atlas, Moroc-co, with a focus on carbonate replacement textures, while also exploring its classification as either a carbonate replacement deposit or a skarn deposit. Practical implications.Mineral textures are indicators of the replacement process in the Amensif Zn-Pb-Cu-Bi-Ag±Au carbonate replacement deposit (the Western High Atlas, Morocco). The results obtained from this research paper can be used as a powerful tool in mineral exploration of the Western High Atlas.
Azizi Moussaid, Mohamed Aissa, Panagiotis Voudouris, Hafid Mezougane, Mohamed Benbrahim, Said Ilmen, Mohamed El Azmi, Muhammad Souiri, Ilyasse Loudaoued, and Ilya Prokopyev
Elsevier BV
Mohammed El Azmi, Mohamed Aissa, Azizi Moussaid, Said Ilmen, Hafid Mezougane, Ilya Prokopyev, Ilyasse Loudaoued, Muhammad Souiri, Hassane Ouguir, Mohammed Aarab,et al.
MDPI AG
The Açdif gold deposit is located in the Zenaga Inlier (central Anti-Atlas), approximately 120 km southwest of the city of Ouarzazate. It hosts gold mineralization associated with a shear zone affecting the metamorphic and magmatic formations of the Eburnean basement. It mainly consists of alternating micaschists, augen gneisses, and orthogneiss. These crystalline rock assemblages are intruded by a variety of granitoids. These are the Azguemerzi granitoids, which are locally affected by Eburnean deformation. Subsequently, these facies are intersected by a swarm of mafic dykes, which show a variety of rocks ranging from microgabbro-dolerite to quartz diorite. Detailed mapping, petro-mineralogical investigations, and geochemistry of the major and trace elements of these magmatic intrusions suggests the following: (i) for the granodiorite rocks (deposited before the basic dykes), a calc-alkaline affinity, with a chemical signature similar to a syn-collisional context; (ii) for mafic dykes, a contemporaneous emplacement of these mafic intrusions with an evolutionary process controlled by fractional crystallization of the same magma of continental tholeiites, whose chemical composition is comparable to that of enriched MORBs (EMORBs). These continental tholeiites are related to a distensive tectonic context that would have affected the Zenaga inlier prior to the Pan-African orogeny.
Abdel-Ali Kharis, Said Ilmen, Mohamed Aissa, Bouchra Baidada, Azizi Moussaid, Hafid Mezougane, Ahmed Fadili, Hicheme Houane, Sghir Syad, and Lhou Maacha
Elsevier BV
Mohammed Jaffal, Abderrahmane Soulaimani, Saïd Ilmen, Fouzia Anzar, Azzouz Kchikach, Ahmed Manar, Ayoub Soulaimani, Lhou Maacha, and Amine Bajddi
Elsevier BV
Mohamed Ez-Zghoudy, Moha Ikenne, Mustapha Souhassou, Mohamed Alaeddine Belfoul, Mohamed Gouiza, Said Ilmen, Mehdi Ousbih, Abdelhak Karfal, Lhou Maacha, and Mohamed Zouhair
Elsevier BV
M. Ikenne, M. Souhassou, B. Cousens, P. Montero, F. Bea, F. Askkour, F. Haissen, E.H. Beraaouz, R.E. Ernst, A. Bajddi,et al.
Elsevier BV
Abdel-Ali Kharis, Said Ilmen, Mohamed Aissa, Lahssen Baidder, Azizi Moussaid, Hafid Mezougane, Bouchra Baidada, Nouamane El Ouad, Youssef Atif, Hicham Houane,et al.
Dnipro University of Technology
Purpose. The purpose of the present research is to provide a new lithological, structural and magmatic features of the Oumjrane-Boukerzia Mining District. The results obtained are used to guide exploration works for identifying the new Cu, Ni, Pb, Zn depositions and Ba-bearing mineralization within the whole Oumjrane-Boukerzia domain. Methods. This research is based on detailed mapping, structural surveys and geochemical studies performed on the magmatic rocks in the studied area. Findings. Structural and microstructural analyses of the studied area have revealed three complex polyphase tectonic events related to the Variscan orogeny: (i) an extensive phase during the Devonian period; (ii) a NW-SE compressional phase of Namuro-Westphalian age; (iii) a NE-SW compressional phase of Stephanian-Autunian age, and (iv) an extensive late phase probably related to the opening of the Central Atlantic ocean during the Late Trias-Jurassic periods. The sedimentary rocks of the district are locally intruded by small undated gabbroic intrusions. Geochemically, these gabbroic bodies are described as olivine-rich gabbros with a continental tholeiitic affinity and suggested to be related to the Central Atlantic magmatic province (CAMP) during the Pangea break-up. Originality. The present study describes the host-rocks and structural events responsible for Cu, Ni, Zn, Pb deposition and Ba-bearing mineralization in the Oumjrane-Boukerzia Mining District (Eastern Anti-Atlas, Morocco). Practical implications. The geological studies, especially lithostratigraphic, tectonic and magmatism are essential in the mineral exploration. They help exploration geologists identify and define metallotects to discover new minerals.
Amal El Arbaoui, Ismaïla N’Diaye, Zaineb Hajjar, Amina Wafik, Abdelhak Boutaleb, Said Ilmen, Abderrahim Essaifi, and Mohammed Bouabdellah
Hindawi Limited
The Roc Blanc Pb-Zn-Ag-Au vein deposit is located in the NW of Marrakech, in the Central Jebilet massif. It is spatially related to Bramram-Tabouchennt-Bamega (BTB) granodioritic pluton (ca. 330 Ma) metamorphism aureole. The main veins hosted in black shales are oriented N-S to NNW-SSE. Pb-Zn-Ag-Au ore is associated with quartz, chlorite, sericite, and carbonate gangue minerals. Two major stages of ore deposition were distinguished. The preore stage (stage I) comprises two quartz-mineralised vein generations with Fe, As, Zn, and Cu ores (vg1 and vg2). The main ore stage (stage II) consists mainly on Ag, Au, Pb, Zn, Cu, and Sb ores, which is hosted by carbonaceous vein (vg3) and by two late quartz generations veins (vg4 and vg5 with a geodic quartz). Three types of fluid inclusions have been recognized in silver mineralisation bearing quartz veins according to petrographic investigations, microthermometry, and Raman spectroscopy studies: (i) liquid-rich H2O-N2-CH4±CO2-(salt) fluid inclusions (type 1), (ii) vapour-rich H2O-CO2-CH4-N2-(salt) fluid inclusions (type 2), and (iii) aqueous H2O-(salt) fluid inclusions (type 3). The interpretation of fluid inclusion data shows a mixing of two fluids that are metamorphic and surface to subsurface origin, trapped at boiling state. The first mineralised stage was deposited at 350 ± 20 ° C (this temperature of ore deposition was supported also by chlorite geothermometry) with salinity of 13.7 wt% NaCl equiv., while the deposition of the argentiferous stage, which consists of the main economic mineralisation of the Roc Blanc deposit, occurs during decreasing temperature at 150°C with a salinity of 12.1 wt% NaCl equiv. The all-mineralised ore was deposited at relatively low pressure, below ~1-1.1 kbar. So, fluid dilution and cooling are probably the main factor for silver deposition in the Roc Blanc polymetallic vein deposit. In addition, fluid inclusion studies reveal that the mineralising fluid corresponds to a mixture of metamorphic fluid (H2O-CH4-N2-CO2) with surface to subsurface aqueous gas-free fluids (H2O-salt, meteoric, or brine).
Anas Driouch, Latifa Ouadif, Khalid Benjmel, Mohamed Bhilisse, and Said Ilmen
Dnipro University of Technology
Purpose. This paper deals with the determination of the regional stress field direction of the Bou Azzer inlier using the remote sensing tool. Methods. CIn this study, we use an approach to digital mapping by remote sensing, including the steps of pre-processing and processing of Landsat-8 OLI images. Then, an automatic extraction of lineaments based on directional filtering has been performed. To determine the main directions of major mean fractures, these results have been supplemented and confirmed by an integrated model, including a synthesis of bibliographic works and field studies. Findings. The directional rosette analysis results show four systems of major directions namely, N0°, N45°, N90° and N135°. The regional stress field in the study area, according to tectonic history, is characterized by a horizontal compression tectonic regime, as indicated by several systems of strike-slip faults with a high tendency to deformation. Thus, the abundance of brittle and ductile microtectonic indicators confirms the direction of the main compressive stress N°30. The direction of the three-dimensional stress field: σ1: N°30, σ2: N°120, σ3: Vertical component. Originality. The present study allows to determine the regional stress field direction of the Bou Azzer inlier, in particular, in areas affected by complex tectonics of various scales, as well as in hard-to-reach areas. Practical implications. In mining practice, the study of stability using 2D and 3D geotechnical numerical modeling of underground mine workings is essential. The stress field direction is an important input parameter to develop more realistic decision support models, as well as to ensure the safety of people and materials at the Bou Azzer mine.
Zaineb Hajjar, Fernando Gervilla, Isabel Fanlo, José-María González Jiménez, and Said Ilmen
Elsevier BV
Bouchra Baidada, Moha Ikenne, Pierre Barbey, Abderrahmane Soulaimani, Brian Cousens, Faouziya Haissen, Said Ilmen, and Abdelkhalek Alansari
Elsevier BV
Bouchra Baidada, Abdelkhalek Alansari, Basem Zoheir, Said Ilmen, Abderrahmane Soulaimani, and Moha Ikenne
Elsevier BV
Rachida Bendaoud, M’hamed El Janati, Mohamed Elaatmani, Luisa Carvalho, Zaineb Hajjar, Said Ilmen, Abdallah Algouti, Ahmed Algouti, and Lahcen Khouchaf
Springer Science and Business Media LLC
Bouchra Baidada, Brian Cousens, Abdelkhalek Alansari, Abderrahmane Soulaimani, Pierre Barbey, Said Ilmen, and Moha Ikenne
Elsevier BV
S. Ilmen, A. Alansari, A. Bajddi, and L. Maacha
Springer Science and Business Media LLC
Said Ilmen, Abdelkhalek Alansari, Bouchra Baidada, Lhou Maacha, and Amine Bajddi
Elsevier BV