| 甘肃岷县寨上金钨矿床中钨矿特征及找矿标志 |
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| 引用本文： | 郑卫军,刘新会,陈彩华,张益星.甘肃岷县寨上金钨矿床中钨矿特征及找矿标志[J].西北地质,2010,43(3):85-92. |
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| 作者姓名： | 郑卫军 刘新会 陈彩华 张益星 |
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| 作者单位： | 武警黄金第五支队,陕西,西安,710100 |
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| 基金项目： | 中央黄金专项基金项目;甘肃省岷县寨上岩金普查 |
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| 摘 要： | 寨上矿床属于以金为主、伴生钨的多金属矿床。目前已发现15条钨矿化体,其中主要的6条钨矿体均与金矿体相重合。寨上矿区9处异常中有7处Au、W异常相重合。Au、W元素相伴生存在,局部地区形成金、钨矿化体共生的局面。钨矿物主要为白钨矿,极少量黑钨矿。白钨矿也是重要的载金矿物,金与钨关系密切。矿体主要产于碳质板岩、泥质板岩、钙质板岩等较软弱岩性地层。矿脉受控于层间或顺层断裂破碎带。矿区的主要蚀变类型有硅化、黄铁矿化,其次为碳酸盐化、绢云母化。低阻高极化异常能较准确的反映矿化带和矿脉的延伸位置。钨的水系沉积物异常和土壤异常均呈带状低值异常特征,与已知矿带吻合较好。研究成果及勘查实践证明,在该金矿化(带)体中寻找钨矿化体是最简捷的方法。
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| 关 键 词： | 寨上矿区 金矿 钨矿 |
Geological Characteristics and Prospecting Marks of Tungsten Deposit in Zhaishang Gold-Tungsten Deposit, Minxian County, Gansu Province |
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| ZHENG Wei-jun,LIU Xin-hui,CHEN Cai-hua,ZHANG Yi-xing.Geological Characteristics and Prospecting Marks of Tungsten Deposit in Zhaishang Gold-Tungsten Deposit, Minxian County, Gansu Province[J].Northwestern Geology,2010,43(3):85-92. |
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| Authors: | ZHENG Wei-jun LIU Xin-hui CHEN Cai-hua ZHANG Yi-xing |
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| Institution: | (No. 5 Gold Geological Party of CAPF,Xi＇an 710100,Shaanxi,China) |
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| Abstract: | The Zhaishang deposit is a large gold deposit associated with a small tungsten deposit.Among the 15 tungsten mineralized bodies that have been discovered,six of them are located in the gold ore bodies.There are seven same anomaly areas of gold and tungsten in nine places.The tungsten mineral is mainly scheelite with a small amount of wolframite.The scheelite is also the important gold-bearing mineral and gold is closely related to tungsten.The ore-vein is dominated by the interlayer fractured belts.Ore bodies appear at lithology-flaccid strata just as carbonaceous slate,shale slate,and calcic slate etc.Types of alteration are mainly silicification,pyritization,and then carbonatization,sericitization.Low resistance with high polarization anomalies belt can indicate the mineralization and ore-vein spreading positions.The anomalies of tungsten in water system sediments and soil are all low values along a belt that uniform with the ore-vein as we know at present.The research results and exploration practices have proved that looking for tungsten in gold mineralizing bodies is the simplest way. |
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| Keywords: | Zhaishang mine gold deposit tungsten deposit |
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