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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