现代地质2023，Vol.37Issue(6)：1538-1552,15.DOI:10.19657/j.geoscience.1000-8527.2023.057
云南个旧芦塘坝—阿西寨地区深部矿化的浅部表征:构造蚀变与原生晕指示
Surface Indicators for Deep Mineralization in the Lutangba-Axizhai Area of Gejiu,Yunnan Province:Implications from Tectonic Alteration and Primary Geochemical Halos
摘要
Abstract
Interlayer oxidized tin ore is a significant mineralization type in the Gaosong orefield at Gejiu.En-hancing the study and exploration for this type of tin mineralization is important to relieve resource crisis and in-crease the reserve for exhausting mines.We study the surface tectonic alteration and primary geochemical halo in the Lutangba-Axizhai area which shows beneficial mineralization conditions for interlayer oxidized deposits,to provide a new basis for their exploration.Field geological survey exhabits that the surface mineralization/altera-tion is mainly composed of iron alteration,argillization and calcite veins.It is commonly controlled by faults,especially at the intersection of NE-and EW-trending ones.The integrated analysis of 13 key elements in the al-tered rocks and wallrocks suggests that Cd,As,Sb,Pb and Zn are potential indicators for Sn orebody.The in-tegrated anomaly distribution of primary geochemical halos in combination with the characteristics of structural alteration zones delineate four metallogenic target zones(Ⅰ to Ⅳ).Comparation and analysis on the front-,near-and rear-halo element combination characteristics of primary geochemical halos in each target area shows that target zone Ⅰ and Ⅱ seem to have deep interlayer oxidized tin ore prospecting potential;target zone Ⅲwith the oxidized ore is probably eroded on the surface,and have deep sulfide ore potential;target zone Ⅳ like-ly has small amount of uneroded remnant orebodies at depth.关键词
高松矿田/层间氧化矿/原生晕/构造蚀变/个旧锡矿Key words
Gaosong ore field/layer oxidize tin ore/primary halo/structural alteration/Gejiu tin mine分类
天文与地球科学引用本文复制引用
常华诚,焦骞骞,江小均,范柱国,芦磊,阮班朗,邓梅..云南个旧芦塘坝—阿西寨地区深部矿化的浅部表征:构造蚀变与原生晕指示[J].现代地质,2023,37(6):1538-1552,15.基金项目
云南省重大科技项目"云南省个旧—麻栗坡矿集区多类型多期次锡钨矿成矿规律及增储"(202202AG050006) （202202AG050006）
云南省顶尖团队培育项目"云南省三江成矿系统与评价"(202305AS350015) （202305AS350015）
云南锡业股份有限公司项目"高松矿田芦塘坝-麒阿西断裂夹持带层间氧化矿找矿研究"(202006CHYCDZB08). （202006CHYCDZB08）
