安徽沙溪斑岩铜矿床的构造岩石屏蔽控矿作用

THE TECTONIC SHIELDING ON ITS CONTROLLING ORE BODIES DURING THEGEOCHEMICAL MINERALIZED PROCESSING IN SHAXI PORPHYRY COPPER DEPOSIT, ANHUI PROVINCE

通过对沙溪斑岩铜矿床的研究，以构造-岩浆活化成矿背景和四级控矿构造为依据，提出了构造岩石屏蔽、背形核部控矿定位的模式及其依据，并讨论构造活动对成矿元素化学行为的控制作用，着重分析了强矿化剂元素F与Cu含量的关系，提出了成矿元素垂向分带、水平分带和迁移富集的地球化学模式。运用此模式预测了沙溪矿床邻区一个相似的成矿远景区，初步证明了本文提出的构造控矿模式。

This paper presented the results of a detailed study of the Shaxi porphyry copper deposit, central Anhui Province. An ore genesis model incorporating geology, geochemistry and more important four critical structural elements was proposed. It was found that the best sites for mineralization were along the cores of anticlines with granitoid intrusions. The distribution of ore-forming elements and the correlation between Cu and F seemed to emphasize the importance of structures. The study also led to the discovery of a new target zone in adjacent areas. Follow-up work has confirmed the existence of similar geophysical anomalies to known mineralization.