| 坦桑尼亚莫罗戈罗地区班巴拉维石墨矿床地质特征及找矿标志 |
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| 引用本文： | 曹义甲.坦桑尼亚莫罗戈罗地区班巴拉维石墨矿床地质特征及找矿标志[J].地质与勘探,2020,56(3):657-666. |
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| 作者姓名： | 曹义甲 |
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| 作者单位： | 河南省地质矿产勘查开发局第二地质矿产调查院,河南郑州; 河南省地质矿产勘查开发局测绘地理信息院,河南郑州 |
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| 基金项目： | 2016年度河南省财政地质勘查（国外）项目（编号：豫国土资发[2016]46号）资助 |
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| 摘 要： | 班巴拉维石墨矿位于坦桑尼亚克拉通东部的乌萨迦兰造山带内,区域地层变形变质作用强烈。矿区内已发现12条石墨矿带,圈定了16个石墨矿体,估算石墨矿物量超过300万吨,矿床规模达到大型。该矿床类型为沉积变质型矿床,赋矿岩石为元古代乌萨迦兰超群鲁匡古勒组特戈特罗段变质岩,矿石类型为含石墨的片麻岩型,工业类型为粗大鳞片状晶质石墨矿石。本文为探寻适合莫罗戈罗地区的石墨矿勘查方法,通过分析含矿岩系、矿体、矿石及矿体激电异常等矿床地质特征,总结了班巴拉维石墨矿的矿床成因、成矿模式和找矿标志,认为"矿化露头调查+激电剖面测量+钻探深部查证"等技术手段相结合在晶质石墨矿床勘查中能起到良好的找矿效果,论文研究可为相似成矿带石墨矿勘查及同类型矿床找矿提供借鉴作用。
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| 关 键 词： | 晶质石墨矿 矿床地质特征 找矿标志 班巴拉维石墨矿 坦桑尼亚 莫罗戈罗地区 |
| 收稿时间： | 2019/4/12 0:00:00 |
| 修稿时间： | 2020/3/10 0:00:00 |
Geological characteristics and prospecting indicators of the Bambarawe graphite deposit in the Morogoro area, Tanzania |
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| Cao Yijia.Geological characteristics and prospecting indicators of the Bambarawe graphite deposit in the Morogoro area, Tanzania[J].Geology and Prospecting,2020,56(3):657-666. |
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| Authors: | Cao Yijia |
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| Institution: | No. 2 Institute of Geological & Mineral Resources Survey of Henan, Zhengzhou, Henan; Institute of Surveying Mapping and Geoinformation of Henan, Zhengzhou, Henan |
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| Abstract: | The Bambarawe graphite deposit is located in the Usagaran orogenic belt, east of the Tanzania craton, with intense deformation and metamorphism. Here 12 graphite zones have been discovered and 16 graphite orebodies have been delineated with estimated graphite mineral amount over 3 million tons, implying a large scale of the deposit. It is of sedimentary metamorphic type deposit, where the host rocks are Tegetero member metamorphic rocks in the Proterozoic Usagaran Super-Group Lukwangule Formation, and graphite occurs in gneiss as coarse scale-like crystalline ores. This paper presents the geological characteristics of ore-bearing rock series, orebodies, and ore and IP anomalies, and studies the genesis, metallogenic model and prospecting indicators of the mine area, which provides a basis for the study of methodology in further surveys. Research suggests that the combination of "mineralization outcrop survey + IP profile measurement+ drilling verification" is an appropriate exploration method for this area, which can achieve a good prospecting effect in the exploration of crystalline graphite deposits. This study can also shed light on the exploration of graphite deposits in similar metallogenic zones and the prospecting of the same type of deposits. |
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| Keywords: | crystalline graphite deposit geological characteristics of deposit prospecting indicator Bambarawe graphite deposit Tanzania Morogoro area |
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