
Application of two-phase leaching method in the study of ferromanganese nodule mineralization
ZHU Feiyang, LI Huaiming, YAO Pengfei, WANG Xiao, ZHU Jihao, LÜ Shihui, LUO Yi, ZHOU Li’na, LIU Yuwei, TANG Yutong
Journal of Marine Sciences ›› 2023, Vol. 41 ›› Issue (2) : 83-93.
Application of two-phase leaching method in the study of ferromanganese nodule mineralization
Two-phase leaching method can separate hydrogenetic and residual mineral phases of ferromanganese nodules, which will provide valuable information with the research of ferromanganese nodule mineralization and pale-environment. In order to study the applicability of the two-phase leaching method in the nodule mineralization research for different types of nodules compared to the bulk sample results, the ferromanganese nodules samples from six stations were selected, which were collected on the seamounts area of western Pacific Ocean and CC Zone of eastern Pacific Ocean, respectively. Geochemical and mineralogical compositions of the bulk samples were analyzed, and elements compositions of the hydrogenetic and residual mineral phases were analyzed, which were obtained using the two-phase leaching method. The results indicated that the mass ration variation of the residual mineral phases was not obvious with about 14.0%-17.6%, which had high contents of Nb, Rb, Ta, Ti, Zr. Contents and relevant rations of elements such as Co, Ni, Cu, Zn, Sr, REY in the hydrogenetic mineral phase showed similar features with those in the bulk samples. Proportion of elements contents like Ti, Nb, Sr between hydrogenetic and residual mineral phases showed well negative correlation with Mn/Fe values, which probably could be regarded as index for ferromanganese nodule mineralized environment research in the future.
two-phase leaching method / ferromanganese nodules / seamounts area of the western Pacific Ocean
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
An updated global bathymetry and topography grid is presented using a spatial sampling interval of 15 arc sec. The bathymetry is produced using a combination of shipboard soundings and depths predicted using satellite altimetry. New data consists of >33.6 million multibeam and singlebeam measurements collated by several institutions, namely, the National Geospatial-Intelligence Agency, Japan Agency for Marine-Earth Science and Technology, Geoscience Australia, Center for Coastal and Ocean Mapping, and Scripps Institution of Oceanography. New altimetry data consists of 48, 14, and 12 months of retracked range measurements from Cryosat-2, SARAL/AltiKa, and Jason-2, respectively. With respect to SRTM15_PLUS (Olson et al.,), the inclusion of these new data results in a similar to 1.4-km improvement in the minimum wavelength recovered for sea surface free-air gravity anomalies, a small increase in the accuracy of altimetrically derived predicted depths, and a 1.24% increase, from 9.60% to 10.84%, in the total area of ocean floor that is constrained by shipboard soundings at 15-arc sec resolution. Bathymetric grid cells constrained by satellite altimetry have estimated uncertainties of 150 m in the deep oceans and 180 m between coastlines and the continental rise. Onshore, topography data are sourced from previously published digital elevation models, predominately SRTM-CGIAR V4.1 between 60 degrees N and 60 degrees S. ArcticDEM is used above 60 degrees N, while Reference Elevation Model of Antarctica is used below 62 degrees S. Auxiliary grids illustrating shipboard data coverage, marine free-air gravity anomalies, and vertical gradient gradients are also provided in common data formats.
|
[18] |
|
[19] |
|
[20] |
|
[21] |
周怀阳, 吕文正, 周宁. 东北太平洋铁锰结核矿床地质模型[M]. 北京: 地质出版社, 2016.
|
[22] |
金翔龙. 东太平洋铁锰结核矿带海洋地质与矿床特征[M]. 北京: 海洋出版社, 1997.
|
[23] |
李扬, 刘淑琴, 梁德华, 等. 多金属结核类型、结构构造及其矿物组成[M]. 武汉: 中国地质大学出版社, 1997.
|
[24] |
钱江初, 初凤友, 冯旭文. 大洋铁锰结核中几种常见锰矿相的特征及其相关性[J]. 矿物学报, 2006, 26(2):152-158.
|
[25] |
陈建林, 沈华悌, 韩喜球, 等. 太平洋多金属结核中铁锰矿物分析及成因研究[J]. 海洋学报, 1999, 21(2):56-64.
|
[26] |
|
[27] |
姜学钧, 林学辉, 姚德, 等. 稀土元素在水成型海洋铁锰结壳中的富集特征及机制[J]. 中国科学:地球科学, 2011, 41(2):197-204.
|
[28] |
|
[29] |
|
[30] |
许东禹, 姚德, 梁宏峰, 等. 多金属结核形成的古海洋环境[M]. 北京: 地质出版社, 1994.
|
[31] |
|
[32] |
|
[33] |
郭世勤, 吴必豪, 卢海龙, 等. 多金属结核和沉积物的地球化学研究[M]. 北京: 地质出版社, 1994.
|
/
〈 |
|
〉 |