摘要
本文讨论了滇东磷块岩物质组分与成矿环境及后期改造的关系。根据CO32-、OH-、F-的含量变化将本区磷灰石分为五个亚种。提出了亚种与成因之间的内在联系。通过微形态和微组构研究,将磷块岩中磷灰石的形成分为沉积、成岩、表生三阶段,分属六个世代,总结了各世代磷灰石的形态和成分特点。对磷块岩中的二氧化硅矿物、碳酸盐矿物和粘土矿物也进行了研究。
The relationship between chemical composition, ore forming environment and postore alteration is investigated.According to the variation of CO_3^(2-), F^-, and OH^- contents, five subspecies of apatite and their genetic correlation are recognized.Microtopographic and microstructural analysis shows that apatite in this area could be formed in three stages (sedimentation, diagenesis, hypergenesis) and six generations.The characteristics of apatite in each generation are discussed.The silicate, carbonate and clay minerals in phosphorites are also described.
出处
《矿物岩石》
CAS
CSCD
1989年第2期25-44,共20页
Mineralogy and Petrology
