云南冶金2026，Vol.55Issue(2)：1-6,18,7.
勐糯铅锌矿床岩性分带特征与成因机制
Lithologic Zoning Characteristics and Genetic Mechanism of the Mengnuo Lead-Zinc Deposit
摘要
Abstract
Mengnuo lead-zinc deposit is located in the Baoshan-Zhenkang Pb,Zn,Hg and rare metal metallogenic belt,and is an important lead-zinc polymetallic ore-producing area.Through large-scale tunnel mapping of typical cross-cuts in the deep part of the mining area and microscopic identification and analysis,combined with a comparison with typical SEDEX deposit characteristics,the lithologic association zoning and genesis of the deposit were systematically studied.The research results indicate that the lithologic associations can be categorized into three groups:overlying strata,ore-bearing strata,and underlying strata.8 distinct lithologic types were further recognized.Among these,the grayish-black units represent reductive lithologic contacts,the purplish-red units represent oxidative contacts,and the light grayish-green,light yellowish-white,and grayish-white units represent transitional contacts.It is suggested that the deposit is a strongly reworked SEDEX-type deposit.Mineralization in the shallow part is dominated by sedimentation,while superimposed reworking may occur at depth.The degree of metamorphism and alteration intensifies downwards,indicating significant prospecting potential for lead-zinc polymetallic ores in the deep part.关键词
勐糯铅锌矿/岩性分带/SEDEX型矿床/深部找矿Key words
Mengnuo lead-zinc deposit/lithologic zoning/SEDEX-type deposit/deep prospecting分类
天文与地球科学引用本文复制引用
杨世成,文德潇,李贵祥,谢恩彩..勐糯铅锌矿床岩性分带特征与成因机制[J].云南冶金,2026,55(2):1-6,18,7.基金项目
国家自然科学基金项目(41572060,U1133602) （41572060,U1133602）
国家危机矿山专项(20089943) （20089943）
