Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon)
In the present study, duricrust formations of Danfili-Mambal are characterized on morphological, mineralogical and geochemical point of view, in order to identify the different facies and to determine their potential mining. To this end, four hills were explored and samples collected for analysis. T...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Scientific African |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468227623003289 |
| _version_ | 1797676233801072640 |
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| author | Asmaou Ahmadou Augustin Desire Balla Ondoa Andre Sini Jean Pierre Nguetnkam |
| author_facet | Asmaou Ahmadou Augustin Desire Balla Ondoa Andre Sini Jean Pierre Nguetnkam |
| author_sort | Asmaou Ahmadou |
| collection | DOAJ |
| description | In the present study, duricrust formations of Danfili-Mambal are characterized on morphological, mineralogical and geochemical point of view, in order to identify the different facies and to determine their potential mining. To this end, four hills were explored and samples collected for analysis. The morphological characterization allows to distinguish four facies : massive to sub-nodular, nodular massive, massive and vacuolar. These facies show a spatial distribution : the massive and vacuolar facies occupy the top and the upper slope of the hills, the nodular facies are found at the mid-slope and the sub-nodular facies at the down slope. The mineralogical analysis revealed that all these facies include gibbsite, kaolinite, goethite, quartz, hematite, magnetite and anatase. Gibbsite appears as the most dominant mineral. Geochemically, aluminum oxides (Al2O3) and iron oxides (Fe2O3) are the most abundant (Al2O3 : 29.92% - 56.59%; Fe2O3% : 8.87% - 46.55%). The SiO2 contents as well as Alkali and alkali earth elements were very low. The most represented trace elements are Ba, Sr, V and Zr. Light rare earths were more concentrated than heavy rare earths respectively: 629.66 ppm and 8.30 ppm. The high values of CIA and MIA (> 99.94) associated to the low content of alkali and alkali earth elements supported an intense weathering origin of duricrust. The presence of gibbsite and kaolinite suggested that the main cristallochemical mecanisms are allitisation and monsiallitisation. The average Al2O3 contents (>40%) associated to low content in SiO2 indicates that they are bauxites. |
| first_indexed | 2024-03-11T22:26:01Z |
| format | Article |
| id | doaj.art-935083f969264d6aa18769510251d1a6 |
| institution | Directory Open Access Journal |
| issn | 2468-2276 |
| language | English |
| last_indexed | 2024-03-11T22:26:01Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Scientific African |
| spelling | doaj.art-935083f969264d6aa18769510251d1a62023-09-24T05:16:27ZengElsevierScientific African2468-22762023-09-0121e01873Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon)Asmaou Ahmadou0Augustin Desire Balla Ondoa1Andre Sini2Jean Pierre Nguetnkam3Faculty of Science, Department of Earth Sciences, University of Ngaoundere, CameroonFaculty of Science, Department of Earth Sciences, University of Ngaoundere, Cameroon; Corresponding author.Meiganga School of Chemical Engineering and Mineral Industry, CameroonFaculty of Science, Department of Earth Sciences, University of Ngaoundere, CameroonIn the present study, duricrust formations of Danfili-Mambal are characterized on morphological, mineralogical and geochemical point of view, in order to identify the different facies and to determine their potential mining. To this end, four hills were explored and samples collected for analysis. The morphological characterization allows to distinguish four facies : massive to sub-nodular, nodular massive, massive and vacuolar. These facies show a spatial distribution : the massive and vacuolar facies occupy the top and the upper slope of the hills, the nodular facies are found at the mid-slope and the sub-nodular facies at the down slope. The mineralogical analysis revealed that all these facies include gibbsite, kaolinite, goethite, quartz, hematite, magnetite and anatase. Gibbsite appears as the most dominant mineral. Geochemically, aluminum oxides (Al2O3) and iron oxides (Fe2O3) are the most abundant (Al2O3 : 29.92% - 56.59%; Fe2O3% : 8.87% - 46.55%). The SiO2 contents as well as Alkali and alkali earth elements were very low. The most represented trace elements are Ba, Sr, V and Zr. Light rare earths were more concentrated than heavy rare earths respectively: 629.66 ppm and 8.30 ppm. The high values of CIA and MIA (> 99.94) associated to the low content of alkali and alkali earth elements supported an intense weathering origin of duricrust. The presence of gibbsite and kaolinite suggested that the main cristallochemical mecanisms are allitisation and monsiallitisation. The average Al2O3 contents (>40%) associated to low content in SiO2 indicates that they are bauxites.http://www.sciencedirect.com/science/article/pii/S2468227623003289Danfili-MambalAdamawa-CameroonDuricrust formationsBauxites |
| spellingShingle | Asmaou Ahmadou Augustin Desire Balla Ondoa Andre Sini Jean Pierre Nguetnkam Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon) Scientific African Danfili-Mambal Adamawa-Cameroon Duricrust formations Bauxites |
| title | Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon) |
| title_full | Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon) |
| title_fullStr | Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon) |
| title_full_unstemmed | Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon) |
| title_short | Morphological, mineralogical and geochemical characterization of the Danfili-Mambal duricrust formations (Adamawa-Cameroon) |
| title_sort | morphological mineralogical and geochemical characterization of the danfili mambal duricrust formations adamawa cameroon |
| topic | Danfili-Mambal Adamawa-Cameroon Duricrust formations Bauxites |
| url | http://www.sciencedirect.com/science/article/pii/S2468227623003289 |
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