桂西荣华锰矿控矿因素和矿层划分研究  

Ore-controlling Factors and Orebed Division of the Ronghua Manganese Deposit in Western Guangxi

作　　者：裴秋明 李社宏[1,2] 苑鸿庆 周旻玥[1] 曾诚[3] 刘胜涛[4] 

机构地区：[1]桂林理工大学地球科学学院,广西桂林541004 [2]广西地质工程中心重点实验室,广西桂林541004 [3]中国石油冀东油田分公司,河北唐山063000 [4]中国石油新疆油田分公司采油一厂,新疆克拉玛依834000

出　　处：《地质与勘探》2014年第2期226-233,共8页Geology and Exploration

基　　金：桂林理工大学人才引进资金资助(gg201103);教育部地质工程中心开放基金联合资助

摘　　要：桂西是我国最重要的锰矿富集地区之一。近年来在德保县荣华乡新发现了锰帽型矿床,锰矿体赋存于中三叠统百逢组碎屑岩系中。前人对该层位的锰矿研究很少,本文首次结合深部钻探工程,对矿床控矿因素及矿层空间展布进行了研究。钻探工程识别出了6个矿层,其中Ⅱ、Ⅲ、Ⅳ矿层稳定,空间上延续性较好。荣华锰矿床的形成是地层岩性、构造条件、地貌特征与古气候因素等多种因素综合作用的结果。矿体的空间展布、规模及其形态等主要受地层和构造因素控制,而该区持续的温暖潮湿气候和有利的地形地貌因素是后期氧化锰矿富集的重要条件。深部钻探工程揭示了原生碳酸锰矿(品位:6.65%~8.20%)的存在,该区深部碳酸锰矿具有较大找矿潜力。Western Guangxi is one of the manganese ore enrichment areas in China. In recent years,a manganese-hat deposit has been discovered in Ronghua town,Debao county. It occurs mainly in Mn-bearing clastic rock series of the Triassic Baifeng Formation. This study analyzes ore-controlling factors and distribution of this manganese deposit combined with deep drilling results. The ore bodies can be divided into 6 seams in vertical direction. And the No. II,III and IV seams have good continuity in space. A combination of lithological,tectonic,geomorphological and climatic controls the formation of the Ronghua manganese deposit. The spatial distribution,scale and morphologies of the ore bodies are mainly controlled by the stratigraphic and structural factors. The continuous warm humid climate and favorable landforms are two important conditions for manganese oxide minerals enrichment. The existence of manganese carbonate ore( ore grade: 6. 65% ~ 8. 20%) is revealed by deep drilling indicative of a great prospecting potential in this area.

关 键 词：荣华锰矿 控矿因素 矿层划分 百逢组 

分 类 号：P618.32[天文地球—矿床学]