摘要
MVT铅锌矿床与有机质密切相关。本文以有机质生成世代为序,讨论了有机质低、中、高成熟阶段的产物在MVT铅锌矿床成矿过程中的作用。腐殖酸在矿床形成的早期阶段配合、吸附Pb、Zn等金属离子,起到促进成矿源层形成的作用。油田卤水可能成为铅锌多金属元素迁移的主要载体和成矿流体的重要组成部分,甚至就是形成密西西比河谷型矿床的一种很重要的潜在成矿流体。甲烷在矿床形成晚期充当还原剂。
There is a close relationship between MVT PbZn deposits and organic matter. According to the generation sequence of organic matter, the function of organic matter in the formation of MVT PbZn deposit during low,moderate and high mature stage is summarized. Humic acids play an important role in the formation of primary ore source through absorbing and combining with Pb2+,Zn2+. Oilfield brine may be a predominant carrier of metal elements and important constituents of oreforming fluids. At some cases, oilfield brine itself might be the important potential oreforming fluids. Methane may act as a reducer in the last stage of mineralization.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2002年第4期272-276,共5页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金(49872038)
中国科学院"百人计划"项目资助