大渡河韭菜坪金矿基性岩脉与成矿关系探讨

To investigate the Dadu River Jiucaiping gold mineralization and mafic dikes

韭菜坪金矿床区域内广泛发育的辉绿岩脉,这些基性岩脉和矿体密切相关,基性岩脉经常被挤压、破碎,或被含金石英脉切割。基性岩脉的成岩时代均远早于成矿时代,因此认为大渡河流域不同赋矿层位中出露的基性岩脉（体）与成矿流体不具备相同的物质来源,但对成矿具有三方面贡献：①提供流体运移通道;②提供成矿的地球化学界面;③提供了热源。

The extensive development of diabase Jiucaiping gold deposit in the region, these mafic dikes and ore body is closely related to mafic dikes are often extruded and broken, or by auriferous quartz veins cutting. The rock into the era of mafic dikes are far earlier than the metallogenic epoch, so that the mafic dikes exposed out of the Dadu River Basin in different ore bearing horizon （body） and the ore-forming fluid does not have the same source material, but has three aspects： 1. Provide the channel contribution to metallogenic fluid migration; 2.the interface provide geochemical mineralization; 3. to provide a heat source.