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Structure and Composition of Micro-Manganese Nodules in Deep-Sea Carbonate from the Zhaoshu Plateau, North of the South China Sea

文献类型：期刊论文

作者Xu, Hengchao3; Peng, Xiaotong3; Ta, Kaiwen3; Song, Taoran2; Du, Mengran3; Li, Jiwei3; Chen, Shun1,3; Qu, Zhiguo3
刊名MINERALS
出版日期2020-11-01
卷号10期号:11页码:20
关键词deep-sea carbonate micro-manganese nodules diageneses South China Sea
DOI10.3390/min10111016
英文摘要The occurrence of deep-sea ferromanganese nodules and crusts on the seafloor is widespread, providing an important resource for numerous metals such as Ni, Co, and Cu. Although they have been intensively studied in the past, the formation of micro-manganese nodules within carbonate rocks has received less attention, despite the considerable amounts of manganese released from the dissolution of the calcareous framework. The micro-petrographic and geochemical characteristics of reef carbonate rocks recovered from the Zhaoshu plateau in the Xisha uplift, north of the South China Sea, were studied using optical microscopy, scanning electron microscopy, confocal Raman spectrometry, and an electron probe micro-analyzer. The carbonate rocks are composed of biogenic debris, including frameworks of coralline algae and chambers of foraminifer, both of which are suffering strong micritization. Within the calcite micrite, numerous micro-manganese nodules were identified with laminated patterns. Mineral and elemental evidence showed that the Mn oxides in the carbonates are mixed with 10 angstrom vernadite, 7 angstrom vernadite and todorokite, both of which are closely associated with the carbonate matrix. The micro-nodules were found to have high Mn/Fe ratios, enriched in Ni and Cu and depleted in Co. We infer that theses nodules are mixed type with early diagenetic growth under oxic-suboxic conditions. The re-distribution of manganite within the rocks is likely influenced by micritization of the calcareous framework. We deduce that microbial-associated reduction of manganite induces the formation of diagenetic todorokite similar to nodules buried in marine sediments.
WOS关键词FE-MN CRUSTS ; HARDGROUND FORMATION ; FERROMANGANESE NODULES ; POLYMETALLIC CRUSTS ; CRYSTAL-CHEMISTRY ; CORALLINE ALGAE ; XISHA ISLANDS ; NI ; CO ; MINERALOGY
资助项目National Key Research and Development Plan of China[2017YFC0306702] ; National Key Research and Development Plan of China[2016YFC0304900] ; National Key Research and Development Plan of China[2018YFC0309802] ; National Science Foundation of China[41906059] ; National Science Foundation of China[41706046]
WOS研究方向Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000593250400001
出版者MDPI
资助机构National Key Research and Development Plan of China ; National Science Foundation of China
源URL[http://ir.idsse.ac.cn/handle/183446/8016]  
专题深海科学研究部_深海地质与地球化学研究室
深海工程技术部_深海信息技术研究室
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外单位在本单位知识产出（本单位资源）_探索一号
外单位在本单位知识产出（本单位资源）_深海勇士
通讯作者Peng, Xiaotong
作者单位1.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
2.Hainan Trop Ocean Univ, Coll Marine Sci & Technol, Sanya 572000, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Hengchao,Peng, Xiaotong,Ta, Kaiwen,et al. Structure and Composition of Micro-Manganese Nodules in Deep-Sea Carbonate from the Zhaoshu Plateau, North of the South China Sea[J]. MINERALS,2020,10(11):20.
APA Xu, Hengchao.,Peng, Xiaotong.,Ta, Kaiwen.,Song, Taoran.,Du, Mengran.,...&Qu, Zhiguo.(2020).Structure and Composition of Micro-Manganese Nodules in Deep-Sea Carbonate from the Zhaoshu Plateau, North of the South China Sea.MINERALS,10(11),20.
MLA Xu, Hengchao,et al."Structure and Composition of Micro-Manganese Nodules in Deep-Sea Carbonate from the Zhaoshu Plateau, North of the South China Sea".MINERALS 10.11(2020):20.

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来源：深海科学与工程研究所

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