 | | Journal (article/letter/editorial) | | Petrography, Mineralogy, and Geochemistry of the Nkamouna Serpentinite: Implications for the Formation of...the Cobalt-Manganese Laterite Deposit, Southeast Cameroon GIDEON LAMBIV DZEMUA† AND SARAH A. GLEESON Department...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...grade and a Ni:Co ratio of less than 3. This makes Nkamouna an unusual type of laterite deposit as it will |  | 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...amphibole, plagioclase, garnet, quartz, and accessory apatite, spinel, sericite, pyrite, chalcopyrite and non-identified...non-identified opaque minerals. The presence of apatite, sericite, and two generations of opaque minerals...reef and (ii) UG2 chromitite reefs of Bushveld complex, South Africa; (iii) Main Sulfide zone of the Great |  | | Journal (article/letter/editorial) | | associated with a high phosphorous content as apatite, that concentrates LREE (light rare earth elements)...Ni deposits are rare and their identification in complex. Their geology and petrogenesis has not been well...geometric re-arrangement, intrusion related events and complex metamorphic histories), conceptually, ophiolitic...nickel are exploration targets elsewhere in the region (e.g., Wowo Gap, lateritic nickel, 120 Mt at 1...the KFZ are steeply dipping to vertical in the region. North of the KFZ, a diverse sequence of Jurassic–Cretaceous |  | 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) | | water leachates for laterite samples, altered ultramafic rocks and soils neighboring the mining areas...laterites developed by chemical weathering of ultramafic rocks with potential post redeposition enrichment...weathering/alteration of laterite deposits and parent ultramafic rocks, mining, and large volumes of smelting...mainly related to the extensive lateritization of ultramafic ophiolites in the Balkan Peninsula (Shebenik–Pogradec...Upper Jurassic–Lower Cretaceous serpentinized ultramafic ophiolites, may be partially preserved in situ |  | | Journal (article/letter/editorial) | | et al. 2004). Most ureilites are unbrecciated ultramafic rocks consisting of olivine and pyroxene, representing...8(Or97.3) <0.1 Zircon 0.1 Apatite Zircon Trace 11 1.3 Trace 1 0.8 Apatite Granophyre-like Graphic texture...normalization program (Table 3). The normative 1.6 21.7 Apatite Whitlockite Zircon mineralogy was then used to...extraterrestrial granites. It plots in a similar region as the bulk compositions of several glassy inclusions...the terrestrial fractionation line, far from the region of ureilites, and close to the field of H chondrites |  | | Journal (article/letter/editorial) | | weathering involved the Oman Mountains region. This weathering produced complex mineral and chemical assemblages...mainly due to the chemical weathering of mafic/ultramafic rocks associated with active Cretaceous to Late...settings developed on Archean to Proterozoic ultramafic rocks, as in Australia, Brazil, Urals, Ukraine...many factors, such as the presence of an exposed ultramafic protolith and tropical to subtropical climates...wt.% in laterites developed on ophiolite mafic/ultramafic rocks (Butt and Cluzel, 2013; Elias, 2006)) and |  | | Journal (article/letter/editorial) | | weathering solutions, causing the formation of complex mineralogical associations (Burns and Burns 1979;...gtz e Tibet Ri Sichuan ve r Zejiang Hunan East China Sea Jiangxi jia n INDIA DXQ Ta iw a n...Lα); Co (Co, Kα); Cu (Cu, Kα), Fe2O3 (Fe, Kα), Cl-apatite (P, Kα), PbS (Pb, Lα), ZnO (Zn, Kα), and NiO (Ni...sample (Vasconcelos 1999). Sample SK-14 yielded a complex spectrum with no plateau age (Fig. 9f). Such an...warm-humid condition in South China is dominated by the East Asian summer monsoon (An et al. 2001), we propose |  | | Report (issue) | | .B3 Graph showing dates associated with all the mine sites on the U.S. Environmental Protection Agency’s...production, U.S. apparent consumption, and U.S. mine production of antimony from 1900 to 2012............................F2 Graph showing world cobalt mine and refinery production and apparent consumption.....................F2 Graph showing world cobalt mine production from 1950 to 2011......................F4. Pie chart showing percentage of world cobalt mine production in 2011, by country................. |
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