摘要
锰结核中的矿物是对结核生长环境反映。对结核进行X射线衍射分析表明:结核中锰矿物主要为水羟锰矿,并含有石英、钙十字沸石、斜长石、以及绿脱石、辉石、方解石和少量的蒙脱石、伊利石、角闪石、绿泥石、白云石、锐钛矿等。锰矿物表明该区为氧化环境,且受到火山、热液活动的影响。定量分析结果表明结核各矿物的含量变化很大,说明结核的生长过程中环境发生了变化。电子探针分析结果表明:结核锰矿物的组分含量变化较大,表明结核的元素来源的不稳定性。
The mineralogy of the manganese nodules reflects the environments under which the manganese nodules formed. X-ray diffaction data for the manganese nodules reveal that manganese mineral is mainly vernadite and contain many other minerals, such as quartz,phillipsite, plagioclase, calcite, nontronite and pyroxene and so on. The manganese mineral reveals that the forming environments is oxidating condition and it was influenced by the volcano and hydrothermal activites. Quantitative XRD method is used to calculate the contents of the minerals. The contents of the minerals vary greatly,which reflects that the forming environments of manganese nodules changes. The compositions of manganese mineral detected by EPMA. The contents of them changed greatly, which reveals that the sources of the elements are unstable.
出处
《海洋湖沼通报》
CSCD
北大核心
2007年第4期65-73,共9页
Transactions of Oceanology and Limnology
关键词
锰结核
水羟锰矿
定量分析
矿物化学
manganese nodules
vernadite
quantitative analysis
mineralogical chemistry
