地球学报2024，Vol.45Issue(4)：493-501,9.DOI:10.3975/cagsb.2024.042801
云南峨山塔甸地区中元古界黑山头组石英岩矿地质特征
Geological Characteristics of Quartzite Deposits of Mesoproterozoic Heishantou Formation in Tadian Area,Eshan,Yunnan Province
摘要
Abstract
Based on the 1:50 000 regional geological survey,typical profile and notch sampling,the Mesoproterozoic Heishantou Formation in the Tadian area of Eshan,Yunnan Province,has identified several layers of quartzite deposits with a thickness of approximately 104-227 m.The ore-bearing lithology is gray-white,ivory-thick layered quartzite,with aphanitic-granular metamorphic structure,mainly composed of quartzite(>95%).The analysis shows that the sample contains 95.15%-99.41%SiO2,0.21%-2.61%Al2O3,0.008%-0.047%CaO,0.088%-0.47%TFe2O3,0.009%-0.56%K2O,and 0.010%-0.13%MgO.The content of TiO2 is 0.011%-0.06%,which partially meets the industrial index requirements of siliceous raw materials such as glass and crystalline silicon.Heishantou Formation quartzite is an ore body with multi-layered occurrence and large monomer thickness,with a stable horizon and long extension.It is a set of coastal sedimentary metamorphic quartzite deposits with great potential value and economic benefits,and is expected to form a large-scale quartzite raw material-producing area in the future.关键词
峨山地区/中元古界/黑山头组/石英岩矿/沉积变质型/找矿潜力Key words
Eshan area/Mesoproterozoic/Heishantou Formation/quartzite ore/sedimentary metamorphic type/prospecting potential分类
天文与地球科学引用本文复制引用
李维科,刘军平,晏海宝,胡绍斌,何世军,赵江泰,赵云江,魏思礼..云南峨山塔甸地区中元古界黑山头组石英岩矿地质特征[J].地球学报,2024,45(4):493-501,9.基金项目
本文由云南省自然资源厅基金项目"云南 1:5 万大庄幅、法裱幅、底土幅、甸中幅区域地质调查"(编号:D202207)和云南省科技计划项目(编号:202305AD160031 （编号:D202207）
202401AT070012)联合资助. This study was supported by Department of Nat-ural Resources of Yunnan Province(No.D202207),and Science and Technology Plan Project of Yunnan Province(Nos.202305AD160031 and 202401AT070012). （No.D202207）
