赣北石门寺矿区位于下扬子成矿省江南地块中生代铜钼金银铅锌成矿带中.根据区域地质背景和矿床地质特征,详细分析了矿区围岩、母岩和控矿断裂等成矿地质条件.矿区钨多金属矿床的围岩为晋宁晚期黑云母花岗闪长岩,判断为新元古代在不成熟陆壳基础上发育而成的火山弧同碰撞过程中形成的S型花岗岩；燕山中期似斑状黑云母花岗岩、细粒黑云母花岗岩、花岗斑岩为成矿母岩,属硅、铝过饱和钙碱性岩石,为九岭岩基在陆内碰撞挤压环境下熔融、同源演化而成的S型花岗岩；石门寺断裂与仙果山—大湖塘－狮尾洞基底断裂的交叉部位控制着矿区燕山中期含矿花岗岩的侵位和钨多金属矿床的分布,为矿区的控矿断裂.%Shimensi tungsten polymetallic deposit is located in Mesozoic Cu-Mo-Au-Ag-Pb-Zn ore belt, Jiangnan block, Lower Yangtze metallogenic province. Based on the regional geological setting and metal-logenic geological feature of the deposit this paper analyses the ore-control factors in detail, such as country rock, host rock and fractures in the working area. The country rock is biotite granodiorite of Late Jin-ning period which is recognized the S-type granite in syn-collision volcanic arc developed on basis of immature continental crust during Neo-proterozoic era; the host rock, Yanshanian porphyrilic biotite granite, fine-grained biotite granite, granoporphry which are Si, Al saturated rock of Ca-alkali series, the S-type granite derived from melting and cognate evolution of Jiuling batholith under intra-continental collisional compression; Shimensi fracture and Xianguoshan-Dhutang-Shiweidong basemental fractures, the ore-control fracture whose intersection controls emplacement of the ore-bearing granite and distribution of W-polymetallic deposits.
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