杨瀚文,王建中,魏立勇,赵军,马承,刘明,孙彪,魏文昊.甘肃寨上超大型钨、金(锑)多金属矿床成因研究[J].西北地质,2021,54(1):125-138 YANG Hanwen,WANG Jianzhong,WEI Liyong,ZHAO Jun,MA Cheng,LIU Ming,SUN Biao,WEI Wenhao.Genesis of the Super-large Tungsten, Gold (Antimony) Polymetallic Deposit in Zhaishang, Gansu Province[J].Northwestern Geology,2021,54(1):125-138
甘肃寨上超大型钨、金(锑)多金属矿床成因研究
Genesis of the Super-large Tungsten, Gold (Antimony) Polymetallic Deposit in Zhaishang, Gansu Province
投稿时间:2020-08-02  修订日期:2020-09-25
DOI:10.19751/j.cnki.61-1149/p.2021.01.010
中文关键词:  多金属矿床;叠加成矿;成矿系列;多期次;甘肃寨上
英文关键词:polymetallic deposit;superimposed mineralization;metallogenic series;multi-stage;Zhaishang in Gansu province
基金项目:中国地质调查局项目“甘肃寨上金矿岩金普查”(DD20191018)
作者单位E-mail
杨瀚文 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100  
王建中 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100
西北政法大学, 陕西 西安 710122 
zhong_jw2004@163.com 
魏立勇 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100  
赵军 西北政法大学, 陕西 西安 710122
中国地质调查局乌鲁木齐自然资源综合调查中心, 新疆 乌鲁木齐 830057 
 
马承 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100  
刘明 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100  
孙彪 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100  
魏文昊 中国地质调查局西安矿产资源调查中心, 陕西 西安 710100  
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中文摘要:
      甘肃寨上超大型钨、金(锑)多金属矿床位于西秦岭岷-礼成矿带西段,属于复合矿床,具有显著的多期次、多物源和多成因特点。年代学结果表明,矿区至少存在早期钨矿化(220 Ma)和晚期金矿化(140~120 Ma)两期成矿作用。钨矿为破碎蚀变岩型,矿质主要来源于岩浆热液,在时空和成因上与同时代富钨的闪长玢岩脉(220~210 Ma)关系密切,属于岩浆成矿系统的铜-钨-钼中高温成矿系列;金成矿作用的物质来源主要是泥盆纪地层,矿化与闪长玢岩脉没有时空关联,成矿时代为燕山期(140~120 Ma),与西秦岭地区燕山期构造岩浆活动具有一致性。金矿类型介于卡林型金矿床和造山型金矿床的过渡类型,属锑-汞-铅-锌中低温成矿系列。笔者认为,寨上超大型多金属矿床成因是中生代陆内造山体制下与构造-岩浆活动有关的成矿系统之2个成矿系列叠加的结果,尚有巨大的找矿潜力。
英文摘要:
      The super-large tungsten, gold (antimony) polymetallic deposit in zhaishang, Gansu province is located in the western part of the Min-Li metallogenic belt, West Qinling. It belongs to the compound deposit characterized by the multiple stages, multi-source and multi-genesis.The chronological results show that it has experienced two metallogenic stages:the early stage (220Ma) of tungsten mineraliazation and the late stage (140~120Ma) of gold mineralization.The W deposit belongs to the broken alteration rock type of the Cu-W-Mo intermediate-high temperature metallogenic series.The ore-forming material is from hydrothermal fluid, which is closely associated with the magmatism of the w-rich diorite porphyrite(220~210 Ma)in terms of time and space.The Au-forming material mainly derived from the Devonian strata, its mineralization has no direct relation with diorite porphyrite in terms of time and space.The mineralization occurred during the Yanshanian period(140~120Ma), which was in consistent with the Yanshanian tectonic-magmatic activities in West Qinling.The Au deposit belongs to transitional deposit between the carlin deposit and the orogenic deposit, being the Sb-Hg-Pb-Zn intermediate-low metallogenic series.The authors propose that Zhaishang super-large polymetallic deposit is superimposed metallogenic series related to the tectonic-magmatic activities in the mesozoic metallogenic system and has huge prospecting potential.
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