摘要
殷家堡子钴矿勘查区位于辽吉造山带内,区内钴矿体均赋存在辽河岩群里尔峪岩组一段磁铁黄铁黑云电气变粒岩中.通过总结勘查成果,结合区域地质背景,对殷家堡子钴矿床矿体特征、成矿作用及成矿时代进行了讨论.依据切穿钴矿体的闪长玢岩脉的锆石U-Pb测年数据,并结合前人资料判断里尔峪岩组的钴矿沉积作用可能发生于2.09~2.19 Ga,区域变质变形作用可能发生于1.85~1.95 Ga.本文报道的辽吉造山带内古元古代侵位的闪长玢岩形成与变质年龄,完善了古元古代岩浆活动记录和钴矿成矿时序,同时将闪长玢岩脉作为重要的找矿标志,可为辽吉造山带钴矿勘查提供借鉴.
The Yinjiapuzi cobalt exploration area is located within the Liaoning-Jilin orogenic belt,with the cobalt ore bodies hosted in the magnetite pyrite biotite tourmaline granulite of the first member of Lieryu Rock Formation,Liaohe Rock Group.Based on the exploration results and regional geological background,this study discusses the characteristics,mineralization process,and metallogenic age of Yinjiapuzi cobalt deposit.The zircon U-Pb dating of diorite porphyrite dikes cross-cutting the cobalt ore body,combined with previous data,indicates that the sedimentary mineralization of cobalt in Lieryu Formation possibly occurred during 2.09-2.19 Ga,while the regional metamorphism and deformation possibly took place in 1.85-1.95 Ga.The formation and metamorphic ages of Paleoproterozoic diorite porphyrite reported in this study has enriched the record of Paleoproterozoic magmatic activity and metallogenic sequence of cobalt deposits.Furthermore,the study identifies diorite porphyry veins as a significant prospecting indicator,which may provide references for cobalt exploration in the Liaoning-Jilin orogenic belt.
作者
赵明磊
李超
常风
王文清
王超
朱筱宇
张馨宁
肇涛金
ZHAO Ming-lei;LI Chao;CHANG Feng;WANG Wen-qing;WANG Chao;ZHU Xiao-yu;ZHANG Xin-ning;ZHAO Tao-jin(Liaoning Geology and Mineral Resources Group Ecological Restoration Co.,Ltd.,Shenyang 110032,China;Department of Natural Resources of Liaoning Province,Shenyang 110032,China;Liaoning Geological Exploration and Mining Group Co.,Ltd.,Shenyang 110032,China)
出处
《地质与资源》
2025年第5期618-629,共12页
Geology and Resources
基金
国家重点研发计划项目“沉积岩-变沉积岩容矿型和红土型矿床钴镍成矿作用与找矿勘查”(2022YFC2903502)
辽宁省自然资源厅省级地质勘查项目“辽东地区钴矿资源潜力评价与重要靶区查证”(辽自然资项[2023]44号),“辽宁省海城市马风-宽甸县红石钴镍矿调查评价”(辽自然资项[2024]48号).
关键词
钴矿
闪长玢岩
找矿标志
成矿时代
辽宁省
cobalt deposit
diorite porphyrite
prospecting indicator
metallogenic age
Liaoning Province
