学术
初论发现于西太平洋富钴结壳的羟锰矿
赵磊[1,2] 田川[1,3] 杨华[1,2] 王丽娟[2] 方念乔[1]
[1]中国地质大学海洋学院,北京100083 [2]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [3]中国五矿集团公司,北京100044
摘 要:
大多数研究者认为富钴结壳中的锰矿物主要是水羟锰矿。X-射线衍射数据表明这次所研究的富钴结壳中主要的富锰矿物相是羟锰矿，这是在以往的结核和结壳研究中鲜为人知。探讨了羟锰矿和水羟锰矿的名称由来、化学式、晶胞参数及X射线粉晶衍射值，建议将X-射线衍射特征值为2．4×10^-10m和1．4×10^-10m的锰矿物相统称为水羟锰矿；通过研究这两种矿物的成因、产状及环境，认为结壳中羟锰矿的存在表明结壳在生长中后阶段仍处于还原环境。[著者文摘]
文章出处:
《现代地质》-2007年21卷2期 -371-375页
分 类 号:
文献标识码:
A
文章编号:
1000-8527（2007）02-0371-05
Initial Discussion on Pyrochroite of the Cobalt-Rich Crusts in the Western Pacific
ZHAO Lei, TIAN Chuan, YANG Hua, WANG Li-juan, FANG Nian-qiao （ 1. School of Marine, China University of Geosciences, Beijing 100083, China; 2. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beifing 100083, China; 3. China Minmetals Corporation, Beijing 100044, China）
Abstract:
The majority of researchers believe that the dominant manganese oxide of Co-rich crusts is vernadite. The data of X-ray diffraction show that pyrochroite is the main mineral oxide phase, which was rarely known in the former studies of manganese nodules and Co-rich crusts. This paper discusses the origin, chemical formula, cell parameter and X-ray powder diffraction data of pyrochroite and vernadite, and suggests that the manganese oxide phase with the values of 2. 4 ×10^-10 m and 1.4 × 10^-10 m is named as vernadite. The author conjectures that pyrochroite of the Co-rich crusts indicates that the environment of growth of the Co-rich crusts was reducing environment which remained in the later stage.[著者文摘]
Key words:
Co-rich crusts; pyrochroite ; vernadite ; Western Pacific
基金资助:
国际海底区域研究开发“十五”项目（DY105-01-04-14）.致谢：结壳中的羟锰矿由中国科学院地质与地球物理研究所的张振禹研究员在研究了大量资料的基础上慎重地鉴定的,中国地质大学（北京）陈荣秀高级工程师等在查阅有关资料的过程中给予了鼎力相助,在此谨表谢忱!
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