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柴北缘似玲珑式金矿床构造与成矿的关系及成矿模式——以三角顶金矿床为例
- 逯永卓|韩杰|张鑫利|张启龙
- 作者单位：
- 青海省地质调查院&青藏高原北部地质过程与矿产资源重点实验室|青海省地质调查院&青藏高原北部地质过程与矿产资源重点实验室|青海省地质调查院&青藏高原北部地质过程与矿产资源重点实验室|青海省地质调查院&青藏高原北部地质过程与矿产资源重点实验室
基金项目：
- 中央地质勘查基金“青藏专项”项目(12120114047701)；青海省地质勘查基金项目（2018137044kc008）
详细信息：
- 作者简介：
- 逯永卓（1989—），男，宁夏西吉人，工程师，硕士研究生，从事矿产勘查工作；西宁市城中区南川西路107号，青海省地质调查院，810012；E-mail:mrluyz89@163.com
- 通讯作者：
- E-mail:86576740@qq.com，18797159706
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Relation between the structures and metallogenesis in Linglong-like type gold deposits on the north margin of Qaidam Basin—A case study of Sanjiaoding Gold Deposit
- English Author：
- Qinghai Geological Survey Institute&Key Laboratory of the Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources|Qinghai Geological Survey Institute&Key Laboratory of the Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources|Qinghai Geological Survey Institute&Key Laboratory of the Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources|Qinghai Geological Survey Institute&Key Laboratory of the Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
三角顶金矿床为近年在柴北缘新发现产于奥陶纪花岗闪长岩体中的似玲珑式金矿床。通过对矿床地质特征的总结梳理，分析探讨了构造与成矿的关系。结果表明：三角顶金矿床矿体受不同构造控制，矿区内形成了含金石英脉型与含金硅化糜棱岩型2种矿石；岩体中弱变形域的张性节理、裂隙是含金石英脉的主要容矿、储矿空间，而北西向韧性剪切带控制了含金硅化糜棱岩型矿（化）体的产出。相应的控矿构造是今后找矿主线。
关键词:
构造形态；矿石类型；张性节理；韧性剪切带；三角顶金矿床
Abstract:
Sanjiaoding Gold Deposit is a Linglong-like type gold deposit hosted within an Ordovician granodiorite pluton newly discovered in recent years on the north margin of Qaidam Basin.Based on summary of the geological characteristics of the deposit,this paper analyzed and discussed the relationship between structures and gold mineralization.The results show that the orebody of Sanjiaoding Gold Deposit is controlled by different structures,and 2 types of ores,that is gold-bearing quartz vein type and gold-bearing silicified mylonite type,are formed in the district;the tensile joints developed within the weakly deformed area in the rock mass are the main ore host and storage space for gold-bearing quartz veins,while the NW-striking ductile shear zone controls the formation of gold-bearing silicified mylonite-type ore(mineralized)bodies.The corresponding ore-controlling structures are the priorities of future prospecting.
Keywords:
structural morphology;ore type;tensile joints;ductile shear zone;Sanjiaoding Gold Deposit