河南省文峪金矿床构造控矿规律研究  

STUDY ON STRUCTURAL ORE-CONTROLLING REGULARITY OF WENYU GOLD DEPOSIT, HENAN PROVINCE

作　　者：徐叶兵[1] 范永香[1] 

机构地区：[1]中国地质大学

出　　处：《地质与勘探》2003年第5期30-34,共5页Geology and Exploration

摘　　要：文峪金矿床是小秦岭金矿带内一大型金矿床,属韧—脆性叠加剪切带石英脉型金矿,构造是其首要控矿因素。早期韧性剪切带只对矿脉起宏观控制作用,晚期的脆性断裂为含金石英脉的直接控矿构造。成矿期脆性断裂的多次继承性活动分别控制了热液期4个成矿阶段。脆性断裂形成的空间形态对矿体形态产状具控制作用。有利的矿化富集部位为:①显示压扭性质的近东西向断裂沿走向产状变化处,沿倾向由陡变缓处,断裂面的凹凸转变处;②断裂分支复合部位;③成矿期断裂多次脉动的启张部位;④成矿期断裂构造继承性活动强的部位等。在构造控矿研究的基础上,结合前人部分研究成果,构建了该矿床构造控矿模式。Wenyu gold deposit, one of the large-scale deposits in Xiaoqinling gold belt, is a gold-bearing quartz vein type deposit controlled by ductile-brittle superimposed shear zone. The structure was the most important ore-controlling factor to the deposit. The earlier ductile shear zone controlled the distribution of the quartz veins, and the late brittle fault controlled the orebody directly. Several times of pulsation of ore-controlling fault in mineralization epoch respectively controlled four phases of mineralization in hydrothermal stage. The empty space caused by the movement of the brittle fault controlled the orebody's morphology and attitude. The favorable positions forming industrial orebodies are as follows, the position of attitude variation along the strike, the position of getting low angle from high angle along the dip, the position of the transition between bulge and hollow of fault plane in nearly east-west compression-shear fault, the position where the brittle fault moved strongly for several times, and the partial position of extension caused by fault pulsation during mineralization epoch. On the basis of the structural ore-controlling regularity and some other researcher's positive results, a structural ore-controlling model for Wenyu gold deposit was set up for the first time.

关 键 词：金矿床 构造控矿 韧性剪切 脆性断裂 控矿模式 

分 类 号：P618.51[天文地球—矿床学]