STUDIES OF MINERALOGY AND GEOCHEMISTRY OF RARE EARTH ELEMENTS (REES) IN PERMO-TRIASSIC BAUXITE DEPOSIT, NORTHEAST OF BUKAN, NW OF IRAN

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ABEDINI ALI; KALAGARI A.A.; HAJALILOU B.; JAHANGIRI AHMAD

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2008 | Volume:16 | Issue:3 Page(s): 459-472

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Title

STUDIES OF MINERALOGY AND GEOCHEMISTRY OF RARE EARTH ELEMENTS (REES) IN PERMO-TRIASSIC BAUXITE DEPOSIT, NORTHEAST OF BUKAN, NW OF IRAN

Author(s)

ABEDINI ALI | KALAGARI A.A. | HAJALILOU B. | JAHANGIRI AHMAD | Issue Writer Certificate

Keywords

BAUXITEQ2

PARENT ROCKQ2

REES GEOCHEMISTRYQ3

DEFERRUGINIZATIONQ3

HOST MINERALSQ3

NE BUKANQ3

Abstract

BAUXITE deposit of Permo-Triassic age in northeast of Bukan was developed stratiformly along the boundary between Ruteh and Elika formations, and includes four distinct rock units. This deposit was affected by tectonic and morphological processes. Mineralogical and geochemical investigations showed that during weathering processes, two mechanisms of ferrugenization and deferrugenization played crucial role in formation of minerals such as diaspore, boehmite, hematite, goethite, kaolinite, pyrophyllite, clinochlore, illite, montmorillonite, anatase, rutile, albite, sanidine, quartz, and calcite in this deposit. By taking notice of field evidence and of mineralogical and geochemical data, the basalts (whose remnants are still present along the contact of this deposit with carbonate bedrock) are the potential PARENT ROCK of this deposit. The distribution pattern of REEs (normalized to chondrite and basaltic PARENT ROCK) along with anomaly variations of Eu, Ce, and (La/Yb)N indicates differentiation of LREEs from HREEs during bauxitization processes. Further geochemical considerations indicate that the concentrations of LREEs were occurred by hematite, goethite, manganese oxides, cerianite, and secondary phosphates (rhabdophane, vitusite, gorceixite, monazite) and of HREEs by clay minerals, rutile, anatase, zircon, euxenite, and fergusonite. Incorporation of the results obtained from mineralogical and geochemical investigations suggests that in addition to factors such as pH of weathering solutions, ionic potential, composition of the PARENT ROCK, and fixation by residual minerals, adsorption processes also played crucial role in enrichment of REEs during moderate to intense lateritization in the study area.

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GEOCHEMISTRY OF JAVANMARD BAUXITIC-LATERITICORES, NE BUKAN, WEST-AZERBAIJAN PROVINCE

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APA: Copy

ABEDINI, ALI, KALAGARI, A.A., HAJALILOU, B., & JAHANGIRI, AHMAD. (2008). STUDIES OF MINERALOGY AND GEOCHEMISTRY OF RARE EARTH ELEMENTS (REES) IN PERMO-TRIASSIC BAUXITE DEPOSIT, NORTHEAST OF BUKAN, NW OF IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 16(3), 459-472. SID. https://sid.ir/paper/4033/en

Vancouver: Copy

ABEDINI ALI, KALAGARI A.A., HAJALILOU B., JAHANGIRI AHMAD. STUDIES OF MINERALOGY AND GEOCHEMISTRY OF RARE EARTH ELEMENTS (REES) IN PERMO-TRIASSIC BAUXITE DEPOSIT, NORTHEAST OF BUKAN, NW OF IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2008;16(3):459-472. Available from: https://sid.ir/paper/4033/en

IEEE: Copy

ALI ABEDINI, A.A. KALAGARI, B. HAJALILOU, and AHMAD JAHANGIRI, “STUDIES OF MINERALOGY AND GEOCHEMISTRY OF RARE EARTH ELEMENTS (REES) IN PERMO-TRIASSIC BAUXITE DEPOSIT, NORTHEAST OF BUKAN, NW OF IRAN,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 16, no. 3, pp. 459–472, 2008, [Online]. Available: https://sid.ir/paper/4033/en

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