中太平洋富钴锰结壳水羟锰矿研究

采用场发射电镜（JSM-6700F）和透射电镜（JEM-2000FX）研究了富钴结壳中水羟锰矿的形态和结构。结果表明:水羟锰矿单体片径一般为30～50 nm，集合体成片状或鳞片状；获得了水羟锰矿d=0.142 9 nm的单晶和三连晶电子衍射结构；水羟锰矿中Fe³⁺、Co³⁺、Ni³⁺为高自旋态离子，Co³⁺、Ni³⁺、Cu³⁺易与Mn⁴⁺形成类质同像置换，部分Fe³⁺与Mn⁴⁺可能存在有限的类质同像置换，置换反应为3 Mn⁴⁺=4Co³⁺（Ni³⁺、Cu³⁺、Fe³⁺），体系总电价平衡。

Study on Vernadite in Co-Rich Crust from the Central Pacific Ocean

The authors report the results of study on the crystal habit and texture of vernadite in a co-rich crust from the Central Pacific Ocean using the JEM-6700F and JSM-2000FX.The results show that vernadites generally occur as a schistose singgle crystal,and schistose or scaly aggregates,and that the single schistose is 30-50 nm in size.The single and trilling crystals electron diffraction patterns of vernadites,i.e.,d=0.142 9 nm,were obtained by JEM-2000FX.Fe3+,Co3+,and Ni3+ exist in vernadite as high spin.Co3...