【摘要】 文章从岩石学和地球化学角度,研究广西热水沉积矿床中重晶石岩的地质地球化学特征。重结晶岩在Al/(Al+Fe+Mn)和Al-Fe-Mn图解上的坐标落在热水沉积区内,为热水沉积形成。区内As、Sb的含量与热水沉积物中As、Sb的含量接近,表现出热水沉积作用的特征。重晶石岩的稀土分配模式具有轻稀土富集,弱的负Ce异常和强正Eu异常特征,为典型的热水沉积物的分布模式。更多还原

【Abstract】 It has researched geological and geochemical characteristics of the barite rocks in Guangxi hydrothermal sedimentary deposit based on lithology and geochemistry.In Al/(Al+Fe+Mn) and Al-Fe-Mn diagrams,the barite rocks’ coordinates lie in the area of hydrothermal sediment,which means the rocks were formed by hydrothermal deposition.The As,Sb content of this area is close to that of hydrothermal sediment which presents the characteristics of hydrothermal deposition.The REE pattern of the barite rocks is a typical hydrothermal sedimentary distribution pattern with LREE enriched,weak negative Ce anomalies and stong positive Eu anomalies.更多还原