 | | Journal (article/letter/editorial) | | Mineralogical characterization of the Nkamouna Co–Mn laterite ore, southeast Cameroon G. Lambiv Dzemua & S. A. Gleeson...Springer-Verlag 2012 Abstract The Nkamouna property is an oxide laterite deposit developed on serpentinized...serpentinized peridotite in southeast Cameroon. It is enriched in Co and Mn, has sub-economic Ni grades and will...Museum, London SW7 5BD, UK lithiophorite makes Nkamouna ore amenable to physical beneficiation, producing...the run-of-mine ore. Keywords Asbolane . Lithiophorite . Nkamouna . Cameroon . Cobalt laterite . Nickel |  | | Journal (article/letter/editorial) | | of the Nkamouna Serpentinite: Implications for the Formation of the Cobalt-Manganese Laterite Deposit...Deposit, Southeast Cameroon GIDEON LAMBIV DZEMUA† AND SARAH A. GLEESON Department of Earth and Atmospheric...The Nkamouna Co-Mn-Ni laterite is an advanced exploration project located in southeast Cameroon. The...The deposit comprises a deep and complex laterite profile with high Co (~0.25 wt %) and Mn (1.33 wt %) contents...ratio of less than 3. This makes Nkamouna an unusual type of laterite deposit as it will be primarily |  | Aiglsperger, Thomas, Proenza, Joaquin A., Zaccarini, Federica, Lewis, John F., Garuti, Giorgio, Labrador, Manuel, Longo, Francisco (2015) Platinum group minerals (PGM) in the Falcondo Ni-laterite deposit, Loma Caribe peridotite (Dominican Republic) Mineralium Deposita, 50 (1) 105-123 doi:10.1007/s00126-014-0520-9 | Journal (article/letter/editorial) | | Platinum group minerals (PGM) in the Falcondo Ni-laterite deposit, Loma Caribe peridotite (Dominican Republic)...Springer-Verlag Berlin Heidelberg 2014 Abstract Two Ni-laterite profiles from the Loma Caribe peridotite (Dominican...precipitated after PGE mobilization within the laterite (neoformation). Our results provide evidence that...that (i) PGM occurrence and PGE enrichment in the laterite profiles is independent of chromitite Editorial...and/or electrochemical metal accretion. Keywords Ni-laterite . Platinum group elements . Platinum group minerals |  | Yongue–Fouateu, R., Yemefack, M., Wouatong, A. S. L., Ndjigui, P. D., Bilong, P. (2009) Contrasted mineralogical composition of the laterite cover on serpentinites of Nkamouna-Kongo, southeast Cameroon. Clay Minerals, 44 (2) 221-237 doi:10.1180/claymin.2009.044.2.221 | Journal (article/letter/editorial) | | composition of the laterite cover on serpentinites of Nkamouna-Kongo, southeast Cameroon R. YONGUE FOUATEU1...University of Yaoundé I, PO Box 812 Yaoundé, Cameroon, Institute of Agricultural Research for Development...Development (IRAD), PO Box 2067 Yaoundé, Cameroon, 3 Department of Earth Sciences, Faculty of Science, University...University of Dschang , PO Box 67, Dschang, Cameroon, 4 Department of Earth Sciences, Faculty of Science...Science, University of Douala, PO Box 24157 Douala, Cameroon 2 (Received 11 November 2007; revised 17 December |  | Fu, Wei, Feng, Yangyang, Luo, Peng, Zhang, Yinmeng, Huang, Xiaorong, Zeng, Xiangwei, Cai, Qian, Zhou, Yongzhang (2019) Weathering of Ophiolite Remnant and Formation of Ni Laterite in a Strong Uplifted Tectonic Region (Yuanjiang, Southwest China) Minerals, 9 (1) 51 doi:10.3390/min9010051 | Journal (article/letter/editorial) | | Remnant and Formation of Ni Laterite in a Strong Uplifted Tectonic Region (Yuanjiang, Southwest China)...China 1. Introduction Chemical weathering of ultramafic rocks has produced numerous lateritic profiles...accretionary belts or komatiites and layered ultramafic rocks in stable cratonic blocks [4,5]. In the...geochemistry of Ni-rich laterite profiles record the complex lateritization history of ultramafic rocks [7,21]....supergene Ni enrichment remain enigmatic due to the complex parent rock lithologies and local environmental |  | | Journal (article/letter/editorial) | | Developed on Gabbro in a Semi-Arid Zone, Northern Cameroon Désiré Tsozué 1, * and Paul-Désiré Ndjigui 2 1...Sciences, University of Maroua, P.O. Box 814, Maroua, Cameroon Department of Earth Sciences, University of Yaoundé...Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon; lndjigui@yahoo.fr Correspondence: tsozudsir@yahoo.fr or desire...developed on gabbro in the semi-arid zone (Northern Cameroon), using mineralogical and geochemical analyses...geochemistry; mass balance; semi-arid zone; Northern Cameroon 1. Introduction Many works have been done on |  | Aye, Beyanu Anehumbu, Sababa, Elisé, Ndjigui, Paul-Désiré (2017) Geochemistry of S, Cu, Ni, Cr and Au-PGE in the garnet amphibolites from the Akom II area in the Archaean Congo Craton, Southern Cameroon. Geochemistry, 77 (1) 81-93 doi:10.1016/j.chemer.2017.01.009 | Journal (article/letter/editorial) | | II area in the Archaean Congo Craton, Southern Cameroon Beyanu Anehumbu Aye, Elisé Sababa, Paul-Désiré...University of Yaoundé 1, P.O. Box: 812, Yaoundé, Cameroon a r t i c l e i n f o Article history: Received...reef and (ii) UG2 chromitite reefs of Bushveld complex, South Africa; (iii) Main Sulfide zone of the Great...(iv) JohnsManville (JM) reef of the Stillwater complex, USA; and (v) ∗ Corresponding author. E-mail address:...II area in the Archaean Congo Craton, Southern Cameroon. Chemie Erde - Geochemistry (2017), http://dx |  | Dublet, Gabrielle, Juillot, Farid, Brest, Jessica, Noël, Vincent, Fritsch, Emmanuel, Proux, Olivier, Olivi, Luca, Ploquin, Florian, Morin, Guillaume (2017) Vertical changes of the Co and Mn speciation along a lateritic regolith developed on peridotites (New Caledonia) Geochimica et Cosmochimica Acta, 217. 1-15 doi:10.1016/j.gca.2017.07.010 | Journal (article/letter/editorial) | | in the transition between the saprolite and the laterite. In the uppermost lateritic horizons, long-time...2010) and Cameroon (Dzemua et al., 2013). However, selective chemical extractions of laterite samples from...knowledge, the effect of the weathering of these ultramafic rocks on the evolution of Co and Mn speciation...concentrated at the transition between the saprolite and laterite units (Llorca and Monchoux, 1991; Fandeur et al...incised peneplain capped by an iron pan in the Goro region (Southern Province; Figure 1). A previous study |  | Domènech, Cristina, Villanova-de-Benavent, Cristina, Proenza, Joaquín A., Tauler, Esperança, Lara, Laura, Galí, Salvador, Soler, Josep M., Campeny, Marc, Ibañez-Insa, Jordi (2022) Co–Mn Mineralisations in the Ni Laterite Deposits of Loma Caribe (Dominican Republic) and Loma de Hierro (Venezuela) Minerals, 12 (8) 927 doi:10.3390/min12080927 | Journal (article/letter/editorial) | | minerals Article Co–Mn Mineralisations in the Ni Laterite Deposits of Loma Caribe (Dominican Republic) and...Ibañez-Insa, J. Co–Mn Mineralisations in the Ni Laterite Deposits of Loma Caribe (Dominican Republic) and...of the Congo, Co is also a by-product of Ni–Co laterite deposits, where Co extraction efficiency depends...detailed study of the Co mineralisation in the Ni–Co laterite profiles of Loma Caribe (Dominican Republic) and...horizon to the saprolite, as observed in other laterite profiles in the world, where the precipitation |  | | Report (issue) | | .pdf. Cover. Underground photo of the Skuterud Mine in Norway showing pink secondary erythrite (a hydrated........................................F4 Ni-Co Laterite Deposits............................................................................F13 Typical Mine Life.......................................................................................F15 Ultramafic Igneous Rocks..............................................................................F16 Mine Waste Characteristics.......................... |  | Economou-Eliopoulos, Maria, Laskou, Magdalena, Eliopoulos, Demetrios, Megremi, Ifigeneia, Kalatha, Sofia, Eliopoulos, George (2021) Origin of Critical Metals in Fe–Ni Laterites from the Balkan Peninsula: Opportunities and Environmental Risk. Minerals, 11 (9) 1009 doi:10.3390/min11091009 | Journal (article/letter/editorial) | | worldwide scale. This is a review on the Fe–Ni ± Co-laterite deposits in the Balkan Peninsula, which are characterized...rare earth element (REE) within the typical Fe–Ni laterite ore and the preferential occurrence of Co (up...towards the lowermost part of the Lokris (C. Greece) laterite ore suggest that their deposition is controlled...concentrations in water leachates for laterite samples, altered ultramafic rocks and soils neighboring the...water–soil–plant investigations in the basins surrounding laterite mines. Keywords: Fe–Ni–Co laterites; critical |  | | Journal (article/letter/editorial) | | platinum-group minerals of the Freetown Layered Complex, Sierra Leone. 1 John F.W. Bowles1, Saioa Suárez2...1180/minmag.2017.081.032 The PGM from the Freetown Complex have been examined in detail from the Babadori...(Burgath, 1988); serpentinite lateritic coatings in Cameroon (Ndjigui and Bilong, 2010); lateritic soils covering...weathered Yubdo ultramafic intrusion, Ethiopia (Belete et al., 2000, 2002), the Uktus Complex in Central Urals...found in the westward draining streams of the complex and, by 1949, 5242 oz of platinum concentrate had |  | | Journal (article/letter/editorial) | | Keywords: Nickel laterite Oman Mountains Ophiolite Weathering a b s t r a c t The laterite profiles investigated...mantle sequence (the Semail ophiolite) onto the East Arabian margin during the Late Cretaceous. The laterites...under tropical to subtropical conditions. Nine laterite profiles have been examined for their Ni potential...bedrock protolith through saprolite, oxide laterite, to clay laterite. A significant enrichment in Ni and Co...concentrations average 0.63% (Ibra), 0.72% (3 profiles, East Ibra), 0.67% (3 profiles, Al-Russayl), and 0.33% |  | Aiglsperger, Thomas, Proenza, Joaquin A., Lewis, John F., Labrador, Manuel, Svojtka, Martin, Rojas-Purón, Arturo, Longo, Francisco, Ďurišová, Jana (2016) Critical metals (REE, Sc, PGE) in Ni laterites from Cuba and the Dominican Republic. Ore Geology Reviews, 73. 127-147 doi:10.1016/j.oregeorev.2015.10.010 | Journal (article/letter/editorial) | | mineralogical data of CM from two different nickel laterite types (i) from the Moa Bay mining area in Cuba...Mn bearing oxide(s) at upper levels of the Ni laterite profiles. Concentration factors involve (i) residual...neoformation processes. Total contents of CM in both Ni laterite types are low when compared with conventional...future unconventional CM ore deposits. Keywords Ni laterite · Rare Earth Elements · Scandium · Platinum Group...major AC ore deposits in South Africa (Bushveld complex) and Russia (Norilsk) (USGS 2013). Supply risks |  | Oppermann, L., Junge, M., Schuth, S., Holtz, F., Schwarz-Schampera, U., Sauheitl, L. (2017) Mobility and distribution of palladium and platinum in soils above Lower and Middle Group chromitites of the western Bushveld Complex, South Africa. South African Journal of Geology, 120 (4) 511-524 doi:10.25131/gssajg.120.4.511 | Journal (article/letter/editorial) | | Middle Group chromitites of the western Bushveld Complex, South Africa L. Oppermann Leibniz Universität...Group (LG) and Middle Group (MG) of the Bushveld Complex in South Africa are mined for chromite but have...LG and MG chromitites of the Thaba Mine (western Bushveld Complex) is investigated, with a special focus...MIDDLE GROUP CHROMITITES OF THE WESTERN BUSHVELD COMPLEX, SOUTH AFRICA to humic acids. Palladium is mobilized...intrusions such as the Bushveld Complex in South Africa. The Bushveld Complex is the largest layered mafic-ultramafic |  | | Journal (article/letter/editorial) | | Keywords: Nickel laterite Oman Mountains Ophiolite Weathering Soil a b s t r a c t The laterite profiles investigated...mantle sequence (the Semail ophiolite) onto the East Arabian margin during the late Cretaceous. The laterites...under tropical to subtropical conditions. Nine laterite profiles have been examined for their Ni potential...NW-SE segment of the Oman Mountains. The preserved laterite profile shows variations in thickness, mineralogy...protolith through saprolite, oxide laterite, to clay laterite. The laterite profiles are unconformably capped |  | | Journal (article/letter/editorial) | | sulfides and Pt–Fe alloys in the Freetown Layered Complex, Sierra Leone John F. W. Bowles 1 & Saioa Suárez...saprolite from Horizon B of the Freetown Layered Complex contain platinum-group minerals (PGM). The PGM...weathering of the horizons. Geology The Freetown Complex in Sierra Leone is a layered intrusion formed of...al. 1977; Chalokwu et al. 1995). On land, the complex consists of a 7-km-thick sequence of gabbroic,...drained to the west by the Alako river and to the east by the Big Water; platinum was recovered from both |  | Dybowska, Agnieszka, Schofield, Paul, Newsome, Laura, Herrington, Richard, Mosselmans, Julian, Kaulich, Burkhard, Kazemian, Majid, Araki, Tohru, Skiggs, Thomas, Kruger, Jens, Oxley, Anne, Norman, Rachel, Lloyd, Jonathan (2022) Evolution of the Piauí Laterite, Brazil: Mineralogical, Geochemical and Geomicrobiological Mechanisms for Cobalt and Nickel Enrichment. Minerals, 12 (10) 1298 doi:10.3390/min12101298 | Journal (article/letter/editorial) | | minerals Article Evolution of the Piauí Laterite, Brazil: Mineralogical, Geochemical and Geomicrobiological...J.; Kruger, J.; et al. Evolution of the Piauí Laterite, Brazil: Mineralogical, Geochemical and Geomicrobiological...Correspondence: p.schofield@nhm.ac.uk Abstract: The Piauí laterite (NE Brazil) was initially evaluated for Ni but...mineral processing to target Co recovery. The laterite is heterogeneous on the mineralogical and lithological...are associated with both the original intrusive complex and also the nature of fluid flow, redox cycling |  | | Report (issue) | | Its presence may indicate significant mafic-ultramafic rocks in the local basement. The balance of primary...production is from magmatic nickel-copper and nickel laterite deposits. Cobalt is present in several carbonatehosted...arc and rift environments associated with mafic-ultramafic rocks. Metasedimentary cobalt-copper-gold deposits...these deposit types show direct links to mafic-ultramafic rocks; the deposits may result from crustal-scale...depths. Hydrothermal deposits associated with ultramafic rocks, typified by the Bou Azzer district of |  | | Journal (article/letter/editorial) | | high concentrations of Co (up to 34,400 mg/L in mine water, 14,165 mg/kg in tailings, 21,134 mg/kg in...have been documented. Co is contained in ore and mine waste in a wide variety of primary (e.g., cobaltite...Hudson-Edwards, K.A. Geochemistry, Keywords: cobalt; mine waste; tailings; erythrite; heterogenite; biogeochemistry...mobility within tailings, soils, smelter waste, and mine waters [10–12]. This paper will review the geochemistry...the major controls on Co uptake and mobility in mine-affected waters, soils, sediments, plants, minerals |  | | Journal (article/letter/editorial) | | iron and manganese oxyhydroxides in laterite developed on ultramafic rocks Carmela Alen J. Tupaz1 Takuya...and Mn-oxyhydroxides found in the Berong Ni–Co laterite deposit at Palawan Island, Philippines. Accurate...Fe. KEYWORDS Fe- and Mn- oxyhydroxides, Ni–Co laterite deposit, Raman spectroscopy 1 | INTRODUCTION...hosted in Ni laterite deposits, which are products of intense weathering of ultramafic rocks such as...serpentinized equivalents (Golightly, 1981). Ni laterite deposits contain Ni, cobalt (Co), and to some |  | Mongelli, Giovanni, Taghipour, Batoul, Sinisi, Rosa, Khadivar, Shirin (2019) Mineralization and element redistribution in the Chah-Gheib Ni-laterite ore zone, Bavanat, Zagros Belt, Iran. Ore Geology Reviews, 111. 102990 doi:10.1016/j.oregeorev.2019.102990 | Journal (article/letter/editorial) | | and element redistribution in the Chah-Gheib Ni-laterite ore zone, Bavanat, Zagros Belt, Iran Giovanni...and element redistribution in the Chah-Gheib Ni-laterite ore zone, Bavanat, Zagros Belt, Iran, Ore Geology...and element redistribution in the Chah-Gheib Ni-laterite ore 2 zone, Bavanat, Zagros Belt, Iran 3 Giovanni...derived from the weathering of ± serpentinized ultramafic 12 rocks and they commonly accounts for over...world land-based Ni resources. Serpentinized 13 ultramafic rocks outcrop extensively in Iran as result of |  | Kotzé, Emmylou, Schuth, Stephan, Goldmann, Simon, Winkler, Benjamin, Botcharnikov, Roman E., Holtz, François (2019) The mobility of palladium and platinum in the presence of humic acids: An experimental study. Chemical Geology, 514. 65-78 doi:10.1016/j.chemgeo.2019.03.028 | Journal (article/letter/editorial) | | environment in the area of the Bushveld Igneous Complex, South Africa, humic acid solutions were prepared...PGE-mineralized chromite reefs of the Bushveld Igneous Complex (BIC), and found that Pt was present in concentrations...Oberthür et al., 2003, 2013), and the Bushveld Complex (Oppermann et al., 2017). Fuchs and Rose (1974)...Experimental approach and sample preparation Although laterite-hosted PGE occurrences are clearly of significance...analyses, the signal of 194Pt+ is interfered by the complex 178Hf16O+, and similarly, 195Pt+ is affected by |  | | Journal (article/letter/editorial) | | weathering involved the Oman Mountains region. This weathering produced complex mineral and chemical assemblages...lateritic paleosol. In the present study, five laterite sections were sampled and studied by using a quantitative...revealed that the main ore minerals of the analyzed laterite are chlorite and goethite as the main Ni-bearing...factors are deemed favorable. Key-words: Nickel laterite, Oman Mountains, Mineral Liberation Analysis ...mainly due to the chemical weathering of mafic/ultramafic rocks associated with active Cretaceous to Late |  | | Journal (article/letter/editorial) | | serpentines and garnierites from the Falcondo Ni-laterite deposit (Dominican Republic) elucidated by means...serpentines and garnierites from the Falcondo Ni-laterite deposit (Dominican Republic) elucidated by means...Mg-phyllosilicates) are the main Ni ores in the Falcondo Ni-laterite deposit (Dominican Republic). In the present paper...Ni-bearing serpentines from the saprolite horizon in Ni-laterite deposits. 1. Introduction Lateritic nickel...formed as a result of chemical weathering of ultramafic rocks (e.g. Freyssinet et al., 2005 and Butt |
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