| 覃英,侯兵德,冯开友,覃永军,曾俊芳.贵州松桃凉风坳锰矿床地质特征及找矿潜力预测[J].贵州地质,2018,35(4):349-356, 375 |
| 贵州松桃凉风坳锰矿床地质特征及找矿潜力预测 |
| Geological Characteristics and Exploration Potential Prediction of Liangfengao Manganese Deposit in Songtao County, Guizhou Province |
| 投稿时间：2018-09-01 |
| DOI： |
| 中文关键词: 锰矿床 特征 找矿潜力 凉风坳 贵州松桃 |
| 英文关键词:Manganese deposit Characteristics Exploration potential Lingfengao Songtao Guizhou |
| 基金项目:中国地质调查局《贵州省矿产资源调查成果综合集成与服务产品开发》(编号DD20160346-28)和贵州省锰矿资源预测评价科技创新人才团队(黔科合平台人才[2018]5618号)联合资助。 |
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| 中文摘要: |
| 松桃凉风坳锰矿是黔湘渝毗邻华系大塘坡式锰矿唯有一个低磷锰矿床，其含矿地层为南华系大塘坡组第一段黑色炭质页岩，地表出露近20 km，含锰岩系及锰矿体从南东往北西方向均具有从无到有并逐渐变厚，再逐渐变薄的变化规律，长轴方向为北东60°70°左右，预测盆地长度1 2001 500 m，宽度300400 m，可划分中心相、过渡相、边缘相，其中:中心相带长300400 m，宽50100 m，以块状锰矿为主。矿区锰矿体最厚2.20 m，平均厚1.14 m，矿床平均品位17.29%，含锰地堑盆地规模小，主体已剥蚀殆尽。南华纪大塘坡早期，该地堑盆地中含锰岩系下部出现可能为重力流或铁丝坳冰期末期的小冰期形成的、由陆源碎屑物组成的特殊地质体，其物源为毗邻凉风坳地堑盆地北侧的秀山-甘龙地垒。由于古天然气渗漏喷溢的中心相、过渡相的主体已被剥蚀殆尽，仅残存部分边缘相，故该锰矿床找矿潜力不大。 |
| 英文摘要: |
| The Liangfengao Manganese deposit is the only low phosphorus ‘Datangpo’ type manganese deposit in Nanhua system of Guizhou, Hunan and Chongqing adjacent area, Its ore bearing strata is the black carbonaceous shale of the first member of the Datang formation in the Nanhua system，the surface exposed near 20 km.From SE to NW，the manganese-bearing rock series and the manganese orebody have the regulation of develop with nothing and become thicker，then became thinner，the long axis direction is NE 60° to 70°，the predicted basin length is 1 2001 500 m，the width is 300400 m，the central phase, transient phase and marginal phase can be divided. Among them, the length of central phase is 300400 m，the width is 50100 m，mainly is massive manganese ore.In the mining area，the thickest orebody is 2.20 m the average thickness is 1.14 m，the average grade is 17.29%，the manganese-bearing graben basin is small and the main body is eroded completely.In early Datangpo，Nanhua period，some special geologic body which formed by gravity flow or little ice Age in late Tiesiao ice Age and consist of terrestrial clast appeared in the lower manganese-bearing rock series of this rift basin，its source is Xiushan-Ganlong graben near the Liangfengao rift basin.Because the main body of central phase and transient phase of ancient natural gas seepage and eruption has been eroded completely，only part marginal phase left，the manganese exploration potential is low. |
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