贵州水银洞金矿床成矿规律与找矿预测模型  

Metallogenic regularity and prospecting prediction model of Shuiyindong Gold Deposit in Guizhou

作　　者：李德东[1] 王玉往[1] 张会琼[1] 解洪晶[1] 陈昱 龙灵利[1] 张志超 Li Dedong;Wang Yuwang;Zhang Huiqiong;Xie Hongjing;Chen Yu;Long Lingli;Zhang Zhichao(Beijing Institute of Geology for Mineral Resources Co.,Ltd.)

机构地区：[1]北京矿产地质研究院有限责任公司

出　　处：《黄金》2024年第9期57-66,共10页Gold

基　　金：国家重点研发计划项目(2017YFC0601204,2018YFC0603804);紫金矿业集团股份有限公司综合找矿预测专项(KCDZKCY-2022-048)。

摘　　要：水银洞金矿床是黔西南地区超大型金矿床之一,由于多年的开采和生产规模的扩大,保有资源量越来越少,亟须综合研究成矿规律和分析成矿潜力。在综合分析以往资料基础上,结合野外调查,认为水银洞金矿床成矿地质体为深部隐伏岩浆岩体,成矿构造为灰家堡背斜与其两侧的逆冲断裂,成矿结构面为浅部三叠系地层裂隙面、龙潭组地层层间裂隙面和切层裂隙面、龙潭组地层与茅口组地层不整合接触面,成矿具有明显垂向分带特征。结合地球物理和地球化学信息构建找矿预测模型,圈定5处找矿潜力区,即控制边界区(包括已知矿体或矿权边界的北部和南部)、新矿化样式/新矿种找矿区(簸箕田矿段以东地区)、新类型/新空间找矿区(水银洞矿权范围隆起区的深部)、新找矿方向区(矿区西南部背斜,如矮煤洞背斜)和探索找矿区(灰家堡背斜水银洞矿权边界以西至回龙断裂之间的区域),为进一步找矿预测提供了参考。Shuiyindong Gold Geposit is one of the super-large gold deposits in the southwestern region of Guizhou.Due to years of mining and expansion of production,the remaining resources are becoming increasingly scarce,necessitating comprehensive research on metallogenic regularities and an analysis of metallogenic potential.Based on a comprehensive analysis of previous data and field investigations,it is suggested that the metallogenic geological body of Shuiyindong Gold Deposit is a deep concealed magmatic body.The metallogenic structure is the Huijiapu anticline and the thrust faults on both sides,while the metallogenic structural surfaces include the shallow Triassic strata fracture surfaces,the interlayer fracture surfaces within the Longtan Formation,and the unconformity contact surfaces between the Longtan and Maokou formations.The mineralization exhibits a distinct vertical zonation.By integrating geophysical and geochemical information,a prospecting prediction model was constructed,identifying 5 potential prospecting areas:the controlled boundary area(including the northern and southern boundaries of known orebodies or mining rights),the area for new mineralization styles or new mineral types(east of Bojitian ore section),the area for new types/spatial prospecting(deep in the uplifted area within the Shuiyindong mining rights),the area for new prospecting directions(the southwestern anticline of the mining area,such as the Aimeidong anticline),and the exploratory prospecting area(the area from west Shuiyindong mining right boundary in Huijiapu anticline to Huilong fault),providing a reference for further prospecting predictions.

关 键 词：灰家堡背斜 成矿结构面 成矿地质体 找矿预测模型 水银洞金矿床 贵州省 

分 类 号：TD11[矿业工程—矿山地质测量] P618.51[天文地球—矿床学]