青海省泽库县瓦勒根金矿区地质特征及远景分析

发布时间：2018-05-17 14:01

  本文选题：青海省 + 瓦勒根金矿　； 参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：瓦勒根金矿床地处西秦岭,是在西秦岭成矿带青海省境内发现的唯一一处大型金矿床。矿床工业类型属微细粒浸染型,金矿体主要产于早、中三叠世隆务河组的由碎屑岩、碳酸盐岩构成的沉积岩和中酸性侵入岩容矿岩石中,矿石由含金矿物呈浸染状分布在容矿岩石中构成,就位于断裂空间,严格地限制在断裂破碎带中。瓦勒根金矿区属同德-泽库成矿带,同仁印支期成矿带,区域上与甘肃境内合作、夏河金矿化带相连,其成矿背景与枣子沟、寨上、大桥、阳山金矿及南部玛曲~南坪金成矿亚带的大水、忠曲金矿非常相似,成因属微细粒浸染型金矿床。从区域成矿背景及矿床本身的特征分析,本区具备找到超大型金矿床的潜力。通过3年的地质勘查和研究工作,在提高了主矿体工程控制程度的同时扩大了矿体规模,瓦勒根金矿区内已发现7条金矿化带77个金矿体,估算金资源量39.51吨,7条金矿化带中仅在Ⅳ号带内以80×80米网度做了系统的工程控制,控制斜深一般为160米,最大斜深510米;其余矿带均处于预、普查阶段,找矿前景非常广阔。通过研究总结了金矿床内与金成矿有密切关系的蚀变有硅化、黄铁矿化、毒砂矿化、褐铁矿化和绢云母化;金矿体的空间分布受不同期次断裂的控制,区域性北西向断裂为导矿构造,而晚期继的东西向断裂构造为容矿构造;通过对比研究,瓦勒根金矿床沿走向向北西延伸方向上找金工作程度很低,应为下步工作的重点区段。
[Abstract]:The Wallegen gold deposit is located in the West Qinling Mountains and is the only large gold deposit found in Qinghai Province in the West Qinling metallogenic belt. The industrial type of the deposit belongs to the microgranular disseminated type, and the gold orebody mainly occurs in the sedimentary rocks composed of clastic rocks, carbonate rocks and intermediate-acid intrusive rocks in the early and Middle Triassic Longwuhe formation. The ore is composed of gold-bearing minerals distributed in the ore-bearing rocks in the disseminated form, which is located in the fault space and is strictly limited in the fracture zone. The Walegen gold ore area belongs to the Tongdezecu metallogenic belt, the Tongren Indosinian metallogenic belt, and cooperates with Gansu in the region. The Xiahhe gold mineralization zone is connected with the Zaozigou, Zhaichang, bridge, and its metallogenic background. Yangshan gold deposit and Dashui gold mineralization subzone of Maqu-Nanping gold deposit in the south are very similar to Zhongqu gold deposit and belong to microfine disseminated gold deposit. From the analysis of the regional metallogenic background and the characteristics of the deposit itself, the area has the potential to find super large gold deposits. Through three years of geological exploration and research work, the control degree of main orebody engineering has been improved and the scale of orebody has been enlarged. Seven gold bodies have been found in 7 gold mineralization zones in the Walergen gold deposit area. It is estimated that the total amount of gold resources in 7 gold mineralization zones of 39.51 tons / ton has been systematically controlled by 80 脳 80 m mesh in zone 鈪，

本文编号：1901655