摘要
辽宁东部榛子沟铅锌矿为辽吉古元古裂谷带青城子矿田内一大型铅锌矿床。矿区内铅锌矿化产于近东西向的甸南-榛子沟背斜北翼,主体赋存于辽河群大石桥组斜长角闪岩、黑云母片岩与含石墨大理岩接触界线附近,并靠近大理岩一侧。矿体的产出明显受到褶皱、层间破碎带和岩性的联合控制。根据矿体的层控特征、硅质岩的发现、同生构造的发育以及微量元素的组成特征,本文认为榛子沟铅锌矿化过程应经历了三个时期:①热水喷流-沉积期;②变质变形期;③热液叠加改造期。古元古代热水喷流-沉积作用为榛子沟铅锌矿床最重要的成矿期。
The Zhenzigou lead-zinc deposit in eastern Liaoning is a large lead-zinc deposit in the Qingchengzi orefield of the Paleoproterozoic Liao-Ji rift zone.The lead-zinc mineralization in the mining area is produced in the north wing of the east-west oriented Diannan-Zhenzigou anticline,and the main body is endowed in the contact zone between amphibolite,biotite schist,and graphite-bearing marble close to the side of the marble of Dashiqiao Formation in Liaohe Group,and the production of the ore body is controlled by the folds,the interlayer fracture zones,and the petrographic control obviously.In this paper,based on the layer-control characteristics of the ore body,the discovery of siliciclastic rocks,the development of syngenetic structures,and trace element characteristics,the authors conclude that the lead-zinc mineralization process in Zhenzigou should have gone through three periods:(1)hot-water exhalation-sedimentary period;(2)metamorphic deformation period;and(3)hydrothermal superimposed modification period.The Paleoproterozoic hot-water exhalation-sedimentary is the most significant mineralization period of the Zhenzigou lead-zinc deposit.
作者
刘旭
许帅农
LIU Xu;XU Shuainong(Mudanjiang Natural Resources Comprehensive Survey Center,CGS,Mudanjiang 157000,Heilongjiang,China)
出处
《吉林地质》
2025年第2期31-36,共6页
Jilin Geology
基金
辽东吉南地区金矿资源潜力动态评价(DD20242751)。
关键词
榛子沟铅锌矿床
地质特征
矿床成因
辽吉裂谷带
辽宁东部
Zhenzigou lead-zinc deposit
geological features
ore genesis
Liao-Ji rift zone
eastern Liaoning
