摘要
墨江金矿是一个与砷硫化镍矿床伴生并含有Ag、Co、Se、铂族元素等有益组分的热液矿床。长期以来,该矿床被认为受金厂背斜倒转的一翼所控制。本文企图说明,该矿床严格受金厂逆冲推覆构造(系红河断裂带的九甲一安定断裂通过矿区的部分)的控制,它的次级北西向及早期东西向构造储矿。早期贫金石英脉受北西向次级断裂、节理、层间滑动面的控制。中期富金石英脉受控于早期东西向构造在成矿期(燕山中-晚期)的再次活动。晚期无金石英脉受控于南北向张节理。
Mojiang gold deposit is a hydrothermal deposit accompanied with arseni-cal sulfide nichel deposit and containing useful components of Ag, Co, Se and platinum group elements. For a long time past. the deposit was thought to be controlled by the reversed limb of Jinchang anticline. This paper tries to illu-strate that the deposit is strictly controlled by Jinchang overthrust nappe which is the part (passing through the mine) of Jiujia-Anding fracture of fled River fracture zone, and that the NW secondary structure of Jinchang overthrust nappe and the early structure of EW stock the ore. The early quartz vein of lean gold is controlled by the secondary fracture, joint and interformational slip surface of NW. the middle quartz vein of rich gold is controlled by the reactivities of early structure of EW during metallo-genetic epoch(Middle-Late Yanshan). The late quartz vein of non-gold is controlled by the tension joint of SN.
出处
《云南地质》
1992年第4期308-317,共10页
Yunnan Geology
