中国科技核心期刊
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几内亚Siguiri金矿床地质特征与控矿因素
- 作者：
- 刘高杰|张志军
- 作者单位：
- 天津华北地质勘查总院|天津华勘矿业投资有限公司
基金项目：
- 中国地质调查局项目（121201004000150017-21）
详细信息：
- 作者简介：
- 刘高杰（1986—），男，河南周口人，工程师，从事区域地质矿产调查和矿产勘查工作；天津市河东区广瑞西路67号，天津华北地质勘查总院，300170；E-mail：858627975@qq.com
- 通讯作者：
- E-mail：52210379@qq.com，13920126637
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Geological characteristics and ore-controlling factors in Siguiri Gold Deposit,Guinea
- English Author：
- Tianjin North China Geological Exploration General Institute|Tianjin Huakan Minerals Investment Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
Siguiri金矿床位于几内亚东北部，处在区域性北西西向和近南北向断裂交汇部位。在成矿地质背景和矿床地质特征研究的基础上，分析了控矿因素。矿体呈脉状、板状赋存在浅变质的Birimian岩系内，?а沂幢渲饕泄杌⑻妓嵫位⒙棠嗍湍瞥な龋渲泄杌⑻妓嵫位虢鹂蠡叵得芮小＝鹂蠡饕Fatoya组粗粒碎屑岩中，岩浆活动可能为成矿提供了热源和部分物源，Eburnean造山运动晚期挤压-伸展转换时期形成的次级断裂控制了矿体的展布，断裂是最重要的控矿因素。
关键词:
西非克拉通；绿岩带；Eburnean造山运动；Siguiri金矿床；几内亚
Abstract:
Siguiri Gold Deposit is located in northeast of Guinea,and at the intersection of regional NWW and near SN fault structures.Based on the research of geological background and deposit geology characteristics,ore-controlling factors are analyzed.The orebodies,which occur as vein and tabular shapes,are hosted in the weakly metamorphosed Paleoproterozoic Birimian series.Wall rock alterations are mainly composed of silicification,carbonation,chloritization,albitization and so on,in which silicification and carbonation are closely associated with gold mineralization.Gold mineralization is mainly found in coarse-grained clastic rocks of Fatoya Formation.Magmatism may provide both heat and part of the material sources for ore-forming.Orebodies are controlled by secondary faults formed during the compression-extension transition period of the late Eburnean Orogeny.Fault is the most important ore-controlling factor.
Keywords:
West African Craton;greenstone belt;Eburnean Orogeny;Siguiri Gold Deposit;Guinea
