Study On Tectonic Alteration Characteristics Of Dayingezhuang Ore Field And Deep Prediction Of Typical Gold Mine In Zhaoyuan

The scale of gold mine resources in Eastern Shandong,China has already ranked the third place in the whole world.Among them,Dayingezhuang gold mine,as the backbone mine of Shandong Zhaojin Group Company Limited that surrounds Dayingezhuang super large mine and grows Xiadian large mine and medium-small gold mines including Caojiawa,Jiangjiayao,Jiudian,has great potential in the regional resources.However,ore-forming regularity in this region is not clear,and studies on the characteristics of granite distribution and tectonic alteration are rather weak,meanwhile study on tectonic ore-controlling regularities of typical gold mines still needs improvement.Research project“Study on Tectonic Alteration Characteristics of Dayingezhuang Ore Field and Deep Prediction of Typical Gold Mine in Zhaoyuan”has great research significance and application value.During my graduate study,I have assisted my supervisor in projects like“The Study on Tectonics,Distribution and Prognosis of the Gold Orebody in Caojiawa in Zhaoyuan”project and“The Study on Orebody Distribution at-330m Section in Xincheng Gold Mine in Laizhou”project,during which I have accumulated abundant first-hand data.This research measured and drew Diagram of Tectonic Altered Rocks Distribution of Dayingezhuang Ore Field for around 400km~2,carried out deep prediction on Caojiawa gold mine which is typical,and made great achievement on solving the problem of prediction of buried ore which has been broken through the way of tectonic lithofacies.Based on systematic analysis of indoor testing data,I submitted my research report and finished writing my graduate thesis on time.The major achievements of this research are as follows:1.Outlined Dayingezhuang gold mine field based on Diagram of Tectonic Altered Rocks Distribution of Dayingezhuang Ore Field.Dayingezhuang gold mine field is in the southern part of Zhaoyuan-Pingdu fracture belt.Inside the mine field,Guojiadian rock mass whose lithology is Luanjiahe middle-coarse grain monzonitic granite invades into Linglong rock mass whose lithology is gneissic biotite granite,meanwhile Zhaoyuan-Pingdu fracture belt overlays on the contact zone of the two types of granites above and metamorphic rocks of Jiaodong group and Jingshan group.Therefore,good metallogenic geological condition of Dayingezhuang gold mine has been produced.2.Confirmed the ore-breaking fault displacement characteristics quantitively and directionally through charting the tectonic alteration characteristics of typical mine.Selected seven depths in Caojiawa mine,carried out actual measurement of tectonic alteration sections in big scale,and studied horizontal distribution of tectonic alteration characteristics of both sides of the ore-breaking fault.Used methods like geometry to make sure the attitude,three-dimensional moving direction,and displacement distance of the ore-breaking fault.And a three-dimensional motion model of the ore-breaking fault has been established.3.Carried out testing analysis of tectonic alterated rocks,and came up with contrasting symbols of the rocks on both sides of the ore-breaking fault.Selected typical rock samples in tectonic alteration zonation,carried out major and trace elements test and fluid inclusion test,came up with that the characterastics of tectonic geochemistry and fluid could be regarded as symbols to compare the rocks on both sides of the ore-breaking fault,which served for target prediction.