摘要
贵州合肥铜锣井大型锰矿床位于鄂渝湘黔前陆褶皱冲断带西部,合肥次级成矿亚带的深溪-八里锰矿矿带。矿区主要出露地层为寒武系第三统-芙蓉统、奥陶系下统娄山关组,奥陶系下统桐梓组、红花园组、中-下统湄潭组,二叠系阳新统梁山组、栖霞组、茅口组,乐平统龙潭组、长兴组地层,三叠系下统夜郎组、中-下统嘉陵江组、中统关岭组地层,第四系。锰矿体产于二叠系阳新统茅口组第三段含锰岩系下部,呈层状、似层状产出,矿石结构主要为内碎屑结构,纹层状、斑杂状、块状构造,矿体厚度与含锰岩系厚度呈正相关,矿体厚度为0.3~3.5 m, Mn品位为12%~31%,平均为19.27%。
Tongluojing large-scale manganese deposit in Zunyi of Guizhou is located in the western part of the foreland fold and fault zone of Hubei-Chongqing-Guizhou.The deposit is located in the western part of EY-Xiang-Qian foreland folded alluvial belt.It is also in Shenxi-Bali manganese ore belt of the Zunyi subduction zone.The main strata exposed in the deposit are Cambrian Tertiary-Furongtong,including Ordovician Lower Series Loushanguan Formation,Ordovician Lower Tongzi Formation,Honghuayuan Formation,Middle-Lower Meitan Formation,Permian Yangxin Series Liangshan Formation,Qixia Formation,Maokou Formation,Leping Tong Longtan Formation,Changxing Formation,Triassic Lower Yelang Formation,Middle-Lower Jialingjiang Formation,Middle Series Guanling Formation,and Quaternary formations.The manganese ore body is produced in the lower part of the third section of manganese-bearing rock system of Maokou Formation of Yangxin Tunnel of Permian System.It occurs in layered and bed-like forms.The structure of the ore body is mainly in the intraformational clastic texture,with structures of stratified laminae,mottled,and massive.The thickness of the ore body and the thickness of manganese-bearing rock system are positively correlated with each other,with the thickness of the ore body ranging from 0.3 to 3.5 m.The grade of Mn ranging is from 12%to 31%with an average of 19.27%.
作者
代德飞
肖亮
陈登
肖林
姜先欢
DAI Defei;XIAO Liang;CHEN Deng;XIAO Lin;JIANG Xianhuan(The Geological Team No.102,Guizhou Bureau of Geological Exploration and Mineral Resources,Zunyi,Guizhou 563003,China;Innovatin Center of Ore Resources Exploration Technology in the Region Bedrock,Ministry of Natural Resources of People’s Republic of China,Guiyang,Guizhou 550081,China)
出处
《中国锰业》
2024年第3期9-14,共6页
China Manganese Industry
基金
贵州省锰矿资源预测评价科技创新人才团队(编号:黔科合平台人才[2018]5618)
贵州省优秀科技青年培养计划(编号:黔科合平台人才[2019]5654)
贵州省科技计划项目(编号:黔科合战略找矿[2022]ZD003)
贵州省科技计划项目(编号:黔科合支撑[2019]2868)
贵州省地矿矿产勘查开发局重大研究课题(编号:黔地矿科合[2020]2、黔地矿科合[2021]3)。
关键词
铜锣井
锰矿
地质特征
贵州合肥
Tongluojing
Manganese ore
Geological features
Zunyi,Guizhou
