内蒙古花脑特银多金属矿Ⅰ号蚀变带构造叠加晕三维模型研究及应用  

Research and Application of 3D Model for Structural Superposition Halos in No.I Alteration Zone of the Huanaote Silver Polymetallic Deposit in Inner Mongolia

作　　者：魏江[1,2] 王信 任良良 要悦稳 魏子鑫 廉永 王旭 WEI Jiang;WANG Xin;REN Liangliang;YAO Yuewen;WEI Zixin;LIAN Yong;WANG Xu(Geophysical Exploration Academy of China Metallurgical Geology Bureau,Baoding,Hebei 071051;Institute of Mineral Resources Research,China Metallurgical Geology Bureau,Beijing 101300;Xilingol League Mountain Jinbaiyin Hubu Mining Co.,Ltd.,Xilin Gol,Inner Mongolia 026000)

机构地区：[1]中国冶金地质总局地球物理勘查院,河北保定071051 [2]中国冶金地质总局矿产资源研究院,北京101300 [3]锡林郭勒盟山金白音呼布矿业有限公司,内蒙古锡林郭勒026000

出　　处：《地质与勘探》2023年第5期1017-1026,共10页Geology and Exploration

基　　金：中国冶金地质总局科研项目“基于三维可视化平台的构造叠加晕深部盲矿预测技术研究”(编号:CMGBK202107)资助。

摘　　要：花脑特银多金属矿位于内蒙古锡林郭勒盟东乌珠穆沁旗境内,矿区内共有4条蚀变带,其中Ⅰ号蚀变带为已发现的最大含矿带。为查明花脑特矿区Ⅰ号蚀变带三维地质特征以进行深部盲矿预测,依托CnGIM-ma软件构建了花脑特矿区Ⅰ号蚀变带三维地质模型,包括几何模型和属性模型。通过几何建模,清晰地展示了Ⅰ号蚀变带深部地质结构特征,解决了长期困扰矿山地质人员的岩体侵入接触界面展布问题;通过属性建模,完成了Ⅰ号蚀变带各单元素的三维异常图,并对前缘晕元素(Hg、B、Sb、As)、近矿晕元素(Ag、Pb、Zn、Cu、In、Au)异常在三维属性模型中的综合表达方法进行了研究探索,最后选用“分带赋值法”建立了前缘晕、近矿晕的综合属性异常模型,在已知矿体的深部预测了2个成矿靶区,可与传统构造叠加晕研究预测位置较好吻合。The Huanaote silver polymetallic deposit is located in the eastern Ujumuqin Banner of Xilingol League,Inner Mongolia.This deposit contains four alteration zones,and the No.I alteration zone is the largest discovered ore-bearing zone.This work aims to determine the threedimensional geological characteristics of the No.I alteration zone,which will help to predict deep blind ores in the Huanaote deposit.A threedimensional geological model of the No.I alteration zone was constructed based on the CnGIM-ma software,including geometric model and attribute model.Through geometric modeling,the characteristics of deep geological structures of the No.I alteration zone were clearly displayed,which has determined the distribution of the rock mass intrusion contact interface that has long troubled mine geologists.Through attribute modeling,the threedimensional anomalies of each single element in the No.I alteration zone were described.The comprehensive expression method of the front halo elements(Hg,B,Sb,As)and near-ore halo elements(Ag,Pb,Zn,Cu,In,Au)anomalies in the three-dimensional attribute model was studied and explored.And the"zoning assignment method"was selected to establish comprehensive attribute anomaly models for the front halos and near-ore halos,and two metallogenic targets were predicted in the depth of the known ore bodies.

关 键 词：三维地质建模 成矿靶区预测 属性建模 CnGIM-ma软件 Ⅰ号蚀变带 花脑特银多金属矿 内蒙古 

分 类 号：P595[天文地球—地球化学]