| 葛战林,郑艳荣,郝迪,张晓星,李晓东,华利鹏,景永康.东秦岭杨斜-丰北河成矿带杨屋场钨(金)矿床地质特征及成因探讨[J].西北地质,2020,53(3):140-152 GE Zhanlin,ZHENG Yanrong,HAO Di,ZHANG Xiaoxing,LI Xiaodong,HUA Lipeng,JING Yongkang.On the Geological Characteristics and Genesis of Yangwuchang Tungsten (Gold) Deposit in the Yangxie-Fengbeihe Metallogenetic Belt, East Qinling[J].Northwestern Geology,2020,53(3):140-152 |
| 东秦岭杨斜-丰北河成矿带杨屋场钨(金)矿床地质特征及成因探讨 |
| On the Geological Characteristics and Genesis of Yangwuchang Tungsten (Gold) Deposit in the Yangxie-Fengbeihe Metallogenetic Belt, East Qinling |
| 投稿时间：2019-12-02 修订日期：2020-05-11 |
| DOI：10.19751/j.cnki.61-1149/p.2020.03.012 |
| 中文关键词: 地质特征;矿床成因;“三位一体”找矿预测;杨屋场钨(金)矿床;东秦岭 |
| 英文关键词:geological characteristics;genesis of ore deposit;trinity prospecting prediction model;Yangwuchang tungsten (gold) deposit;East Qinling |
| 基金项目:中国地质调查局“陕南柞水-商南地区金多金属矿产地质调查”项目（DD20191013） |
| 作者 | 单位 | | 葛战林 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 | | 郑艳荣 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 | | 郝迪 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 | | 张晓星 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 | | 李晓东 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 | | 华利鹏 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 | | 景永康 | 中国地质调查局西安矿产资源调查中心(中国人民武装警察部队黄金第五支队), 陕西 西安 710100 |
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| 中文摘要: |
| 杨屋场小型钨（金）矿床位于东秦岭杨斜-丰北河金钨成矿带东段。通过野外调查、岩矿鉴定及综合研究，查明了该矿床的地质特征与控矿因素，探讨了矿床成因，初步建立其“三位一体”找矿预测模型，可为杨斜地区钨金找矿提供一定的借鉴。研究表明，矿体赋存于商丹断裂带内北东—北北东走向的缓倾断裂，围岩为新元古代杨斜片麻岩套。矿石金属矿物为黄铁矿、黑钨矿、白钨矿、黄铜矿、闪锌矿、方铅矿及黝铜矿等中-高温组合。成矿过程包括热液成矿期与表生期，前者可划分为石英-细粒黄铁矿、石英-黑钨矿-白钨矿-多金属硫化物和石英-方解石-绢云母3个成矿阶段，围岩蚀变以硅化、黄铁矿化和白云母化为主。矿床的成矿作用受印支期花岗岩、断裂构造及围岩控制，成因应属于岩浆期后热液矿床。 |
| 英文摘要: |
| The Yangwuchang tungsten (gold) deposit is located in the eastern part of the Yangxie-Fengbeihe gold-tungsten metallogenetic belt, east Qinling. Through field survey, ore identification and comprehensive studies, this paper clarified the geological characteristics and ore-controlling factors of the deposit, discussed genesis of ore deposit, and preliminarily established the trinity prospecting prediction model, which provides a direction for further W-Au prospecting in Yangxie area. The results show that the ore bodies occur in the NE-NEE faults in the Shangdanfault zone, and are hosted in the Neoproterozoic Yangxie gneiss suite. The metal minerals are medium-high temperature mineral assemblages of pyrite, wolframite, scheelite, chalcopyrite, sphalerite, galena and tetrahedrite. Ore-forming process includes hydrothermal mineralization and supergene periods. The former can be divided into three metallogenic stages: quartz-fine-grained pyrite stage, quartz-wolframite-scheelite-polymetallic sulfide stage and quartz-calcite-sericite stage. Wall-rock alteration is mainly silicification, pyritization and muscovitization. The genesis of this deposit is considered to be a post-magmatic hydrothermal deposit, controlled by the Indosinian granite, faults and wall rock. |
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