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甘肃省岷县寨上金矿床白钨矿成因及找矿潜力

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吕喜旺, 王建中, 郑卫军, 马永兵. 甘肃省岷县寨上金矿床白钨矿成因及找矿潜力[J]. 西北地质, 2017, 50(2): 156-166.
引用本文: 吕喜旺, 王建中, 郑卫军, 马永兵. 甘肃省岷县寨上金矿床白钨矿成因及找矿潜力[J]. 西北地质, 2017, 50(2): 156-166.
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LÜ Xiwang, WANG Jianzhong, ZHENG Weijun, MA Yongbing. Genesis and Prospecting Potential of Scheelite in the Zhaishang Gold Deposit,Minxian County,Gansu Province[J]. Northwestern Geology, 2017, 50(2): 156-166.
Citation: LÜ Xiwang, WANG Jianzhong, ZHENG Weijun, MA Yongbing. Genesis and Prospecting Potential of Scheelite in the Zhaishang Gold Deposit,Minxian County,Gansu Province[J]. Northwestern Geology, 2017, 50(2): 156-166.
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甘肃省岷县寨上金矿床白钨矿成因及找矿潜力

  • 1.

    中国人民武装警察部队黄金第二总队, 河北 廊坊 065000

  • 2.

    中国人民武装警察部队黄金第五支队, 陕西 西安 710100

  • 基金项目: 国家黄金工作专项业务费项目“甘肃省岷县寨上矿区金及多金属勘查”（2015-2016）

Genesis and Prospecting Potential of Scheelite in the Zhaishang Gold Deposit,Minxian County,Gansu Province

  • 1.

    The 2 nd Gold Geological Brigade of Chinese People's Armed Police Force, Langfang 065000, Hebei, China

  • 2.

    No. 5 Gold Geological Party of Chinese People's Armed Police Force, Xi'an 710100, Shaanxi, China

    摘要
  • 寨上钨金多金属矿床位于西秦岭岷-礼成矿带西部，钨矿体产出于北西向破碎带内，钨矿物以白钨矿为主，呈细脉状、团块状与石英、方解石和少量硫化物共生。钨矿床工业类型为石英脉型，根据矿物学、年代学、岩石地球化学研究，表明晚三叠世闪长玢岩脉属于分异程度稍高、氧化性中等的富钨的S型花岗岩，其为钨的矿化提供了成矿流体和物质来源。白钨矿为岩浆热液成因，形成于含氟的中温、弱碱性、氧化环境，其形成时代（222Ma前后）和岩脉活动时代相当，也与区域性岩浆作用十分吻合，寨上钨矿与闪长玢岩脉具有紧密的时空、成因联系，为岩浆热液矿床。
    The Zhaishang tungsten gold poly-metal deposit is located in the western part of the Min-Li ore-forming belt, West Qinling.Tungsten ore bodies are occurred as fine veins or stock works, which are developed in the NW-trending broken belt and are mainly composed of scheelite with quartz and rare sulfides, such as pyrite.The tungsten deposit belongs to the quartz vein type in industry.The chronology and geochemistry results of diorite porphyrite dike display that, the diorite porphyrite belong to the S-type granite, they are rich in tungsten element with high fractionation and middle degree oxidation, which were intruded into the wall rocks and provided the matters and fluids for the tungsten mineralization at late Triassic (221Ma).Scheelite mineralogy show that it was derived from the middle temperature, inferior alkali and oxygen magmatic hydrothermal fluid, it formed at the similar age with the syn-chronology dike (about 222Ma), which is consistent with the age of regional magmatism.All these mentioned above indicate that the Zhaishang tungsten deposit belongs to a magmatic hydrothermal deposit, having the intense temporal, spatial and genesis relationship to the diorite porphyrite dike.
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收稿日期:  2016-11-30
修回日期:  2017-02-26
刊出日期:  2017-06-15

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