| | 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 | | 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) | Formation of Ni Laterite in a Strong Uplifted Tectonic Region (Yuanjiang, Southwest China) Wei Fu 1,2, * , Yangyang...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...laterite profiles record the complex lateritization history of ultramafic rocks [7,21]. (3) Supergene...supergene Ni enrichment remain enigmatic due to the complex parent rock lithologies and local environmental | | | Journal (article/letter/editorial) | 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...Doriri, Urua and Araboro Creeks). Greenschist facies schist of the Owen Stanley Metamorphics outcrops south | | | Report (issue) | .pdf. Cover. Underground photo of the Skuterud Mine in Norway showing pink secondary erythrite (a hydrated.......................................F13 Typical Mine Life.......................................................................................F15 Ultramafic Igneous Rocks..............................................................................F16 Mine Waste Characteristics.........................................................................F18 Mine Closure........................................ | | Van Cromphaut, C., Van Ranst, E., De Resende, V. G., Vandenberghe, R. E., De Grave, E., Lambiv Dzemua, G. (2008) Characterization by Mössbauer spectroscopy of Fe phases in highly weathered serpentinitic soil from southern Cameroon. Clay Minerals, 43 (1) 117-128 doi:10.1180/claymin.2008.043.1.09 | Journal (article/letter/editorial) | highly weathered serpentinitic soil from southern Cameroon C. VAN CROMPHAUT1,*, E. VAN RANST2, V. G. DE RESENDE1...Ghent, Belgium, and 3 Geovic Cameroon PLC, BP 11555, Yaounde, Cameroon 2 (Received 1 April 2007; revised...serpentinized ultrabasic intrusive rocks of southern Cameroon has received considerable attention from mining...distribution of trace elements, suggests ancient mica-schist capping and possibly different cycles of erosion...pedimentation. KEYWORDS: serpentinitic soil, Cameroon, Mössbauer spectroscopy, X-ray diffraction. | | | Journal (article/letter/editorial) | manganese oxyhydroxides in laterite developed on ultramafic rocks Carmela Alen J. Tupaz1 Takuya Echigo1 ... which are products of intense weathering of ultramafic rocks such as dunite, harzburgite, and their...metamorphic rocks are made up of phyllite, slate, schist and quartzite (United Nations Development Programme...formations, which make up the Palawan Ophiolite Complex (Figure 1a) (Yumul et al., 2009). Radiolarian index...Ophiolite Complex (Raschka et al., 1985). The ultramafic rocks of the Beaufort Ultramafic Complex are the | | | 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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