دورية أكاديمية
Sedimentology, Metallographic Characteristics and Geodynamic Evolution of the Merija Copper Deposit (Marginal Folds Basin, Eastern High Atlas, Morocco)
| العنوان: | Sedimentology, Metallographic Characteristics and Geodynamic Evolution of the Merija Copper Deposit (Marginal Folds Basin, Eastern High Atlas, Morocco) |
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| المؤلفون: | Mostapha Bouzekraoui, Mourad Essalhi, Daoud El Azmi, Said Ha, Adnane Tobi, Rachid Majidi, Bilal El Ouaragli, Mohamed Saadi |
| المصدر: | Iraqi Geological Journal, Vol 55, Iss 1E, Pp 12-30 (2022) |
| بيانات النشر: | Union of Iraqi Geologists (UIG), 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Geology |
| مصطلحات موضوعية: | Geology, QE1-996.5 |
| الوصف: | The Merija copper deposit is located in the Marginal Folds of the Moroccan Eastern High Atlas. It is a stratiform deposit hosted in sandstone-conglomerate formations of the Infra-Cenomanian, consisting of copper carbonate and sulphide mineralization (malachite, azurite, traces of chalcopyrite, chalcocite, and covellite). This mineralization exhibits different forms: dissemination in the sandstone-conglomerate host rocks and fillings of centimetric veins, sometimes with calcite. Moreover, microscopic examination shows that the mineralization is disseminated in the carbonate matrix, filling of the inter-granular spaces of the sandstone-conglomeratic material. The mineralogical association is composed of: a primary paragenesis with chalcopyrite ، a secondary cementation paragenesis with chalcocite and covellite and a secondary oxidation paragenesis with malachite. This latter is the most dominant mineral presenting a micro-fibrous texture surrounding the sulphides of the primary and secondary paragenesis, composed of chalcopyrite, chalcocite and covelite. It is associated with a quartz-calcite gangue. The copper mineralization at Merija is heterogeneously distributed within the surrounding sandstone-conglomerate formation due to the diversity of paleocurrents carrying the leached copper. The rich paleocurrents trends S, SW, and SE, whereas the poor ones present an N and NW directions. These paleocurrents are derived from a fluvio-deltaic channel system that controlled sedimentary deposition in the area during the Infra-Cenomanian. This sedimentary type mineralization is probably related to a process of alteration and deposition of detrital materials loaded with copper minerals and derived from a protore copper-bearing. This alteration process gave rise to the malachite and azurite mineralization resulting from the replacement phenomenon of chalcopyrite, chalcocite and covellite. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2414-6064 2663-8754 |
| Relation: | https://igj-iraq.org/igj/index.php/igj/article/view/820; https://doaj.org/toc/2414-6064; https://doaj.org/toc/2663-8754 |
| DOI: | 10.46717/igj.55.1E.2Ms-2022-05-18 |
| URL الوصول: | https://doaj.org/article/aa4583ae648d43c495d27ab56b4ae8d8 |
| رقم الأكسشن: | edsdoj.4583ae648d43c495d27ab56b4ae8d8 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 24146064 26638754 |
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| DOI: | 10.46717/igj.55.1E.2Ms-2022-05-18 |