贵州滥木厂铊(汞)矿床构造控矿特征及其模拟实验研究

滥木厂铊 (汞 )矿床产于NE向滥木厂鼻状背斜核部和近核部 ,并严格受控于与背斜关系密切的NE向断裂组。矿床中矿体的产出则多与层间虚脱空间有关 ,且主要产于晚二叠世龙潭组 (P2 l)和长兴组 -大隆组 (P2 c+d)。对该矿床不同部位取样并进行构造地球化学模拟实验 ,其结果表明 :成矿元素的活化和迁移与塑性变形关系密切 ,脆性变形和塑性变形的层间滑移则为矿体形成提供了有利空间 ;在应力作用下 ,导致有机质的局部富集 ,为富铊矿体的形成提供了条件。实验结果与汞铊矿体和富铊矿体主要产于晚二叠世含煤岩系有利岩石组合内的情况一致

THE FEATURES OF TECTONICS-CONTROLLING METALLOGE NESIS AND ITS EXPERIMENTAL STUDY ON LANMUCHANG THALLIUM DEPOSIT, GUIZHOU PROVINCE

The Lanmuchamg thallium deposit occurs in the core and near the core of the NE Lanmuchamg anticline, and is controlled by NE-SW faults,which have relationship with the Lanmuchang anticline. The occurrence of orebodies is related to the space between layers, and the orebodies are hosted in P\-2l and P\-2c+d formations. The tectono-geochemical experiment samples were collected from different parts of this deposit. From tectonic experiment, we can conclude that the rocks mainly experienced plastic deformation in P\-2l and P\-2c+d, and brittle deformation in T\-1y\+1. The remobilization of metallogenic elements has a close relationship with plastic deformation and the metallogenesis with tectonism.