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对在中太平洋研究区5座海山调查时获取的38个富钴结壳样品中主要金属元素的含量进行了化学分析,探讨了不同海山富钴结壳中Co元素含量的变化规律及结壳中元素间的相关关系,结果表明:(1)5座海山富钴结壳中的各主要金属元素含量相近,38个富钴结壳样品中Co元素的平均含量为0.67%,具有一定的开发前景。(2)不同海山富钴结壳中Co元素含量有一定变化,其变化与富钴结壳的类型、海水水深、地形地貌以及成矿作用等有密切的关系。Co元素在板状结壳中的含量为最高,在钴结核中的含量次之,而在砾状结壳中的含量为最低;富钴结壳中Co元素含量与海水水深呈负相关,浅水区富钴结壳中Co元素的含量明显高于深水区;海山地形地貌对Co元素的含量及富钴结壳的发育有一定影响,海山的椭圆状分支、支脉及边缘部分,Co元素的含量相对较高,富钴结壳发育得较好;Co元素富集成矿作用还主要受锰、铁水成成矿作用的控制。(3)富钴结壳中金属元素之间存在不同程度的相关性。Mn元素分别与Co、Ni、Cu、Zn、Mg、Na、Ba、Ti等元素呈强烈的正相关,而分别与Al、Si、Ca、P、Fe、Sr等元素呈负相关;Co元素分别与Cu、Al、P、Ca等元素呈负相关;Ca元素与P元素呈强烈正相关。
The contents of major metal elements in 38 samples of cobalt-rich crusts obtained from the survey of 5 seamounts in the Central Pacific Research Area were analyzed. The variation of Co-element content in different seamounts of cobalt- The results show that: (1) The contents of all the major metal elements in the five seamount-rich cobalt-rich crusts are similar, and the average content of Co in the 38 cobalt-rich crusts samples is 0.67%, which has a certain development prospect . (2) The content of Co in different seamount cobalt-rich crusts has a certain change, and its change is closely related to the type of cobalt-rich crust, seawater depth, topography and mineralization. The content of Co is the highest in the plate-like crusts, the second is in the cobalt nodules and the lowest in the pebbly crusts. The Co content in the cobalt-rich crust is negatively correlated with the seawater depth, The content of Co element in the cobalt-rich crust is obviously higher than that in the deep-water area. The seamount landform has some influence on the content of Co element and the development of cobalt-rich crust. The content of Co element in seamount’s oval branch, Relatively high cobalt-rich crusts developed well; the enrichment and mineralization of Co elements are also mainly controlled by the mineralization of manganese and molten iron. (3) The metal elements in cobalt-rich crusts have different degrees of correlation. Mn elements were strongly and positively correlated with elements such as Co, Ni, Cu, Zn, Mg, Na, Ba and Ti, respectively, and negatively correlated with elements such as Al, Si, Ca, P, Fe and Sr, respectively And Cu, Al, P, Ca and other elements were negatively correlated; Ca and P elements were strongly correlated.