本文選題：青海省 + 瓦勒根金礦��； 參考：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：瓦勒根金礦床地處西秦嶺,是在西秦嶺成礦帶青海省境內(nèi)發(fā)現(xiàn)的唯一一處大型金礦床。礦床工業(yè)類型屬微細(xì)粒浸染型,金礦體主要產(chǎn)于早、中三疊世隆務(wù)河組的由碎屑巖、碳酸鹽巖構(gòu)成的沉積巖和中酸性侵入巖容礦巖石中,礦石由含金礦物呈浸染狀分布在容礦巖石中構(gòu)成,就位于斷裂空間,嚴(yán)格地限制在斷裂破碎帶中。瓦勒根金礦區(qū)屬同德-澤庫成礦帶,同仁印支期成礦帶,區(qū)域上與甘肅境內(nèi)合作、夏河金礦化帶相連,其成礦背景與棗子溝、寨上、大橋、陽山金礦及南部瑪曲~南坪金成礦亞帶的大水、忠曲金礦非常相似,成因?qū)傥⒓?xì)粒浸染型金礦床。從區(qū)域成礦背景及礦床本身的特征分析,本區(qū)具備找到超大型金礦床的潛力。通過3年的地質(zhì)勘查和研究工作,在提高了主礦體工程控制程度的同時擴(kuò)大了礦體規(guī)模,瓦勒根金礦區(qū)內(nèi)已發(fā)現(xiàn)7條金礦化帶77個金礦體,估算金資源量39.51噸,7條金礦化帶中僅在Ⅳ號帶內(nèi)以80×80米網(wǎng)度做了系統(tǒng)的工程控制,控制斜深一般為160米,最大斜深510米;其余礦帶均處于預(yù)、普查階段,找礦前景非常廣闊。通過研究總結(jié)了金礦床內(nèi)與金成礦有密切關(guān)系的蝕變有硅化、黃鐵礦化、毒砂礦化、褐鐵礦化和絹云母化;金礦體的空間分布受不同期次斷裂的控制,區(qū)域性北西向斷裂為導(dǎo)礦構(gòu)造,而晚期繼的東西向斷裂構(gòu)造為容礦構(gòu)造;通過對比研究,瓦勒根金礦床沿走向向北西延伸方向上找金工作程度很低,應(yīng)為下步工作的重點區(qū)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，

本文編號：1901655