Geological Characteristics And Its Genesis Of Copper Deposits In Weiing Area,Guizhou Province

In this paper,the geological characteristics and the genesis of the deposit are studied in this paper.The research contents include:regional geological background,geological characteristics of mining area and ore body characteristics;The constant elements of the ore were analyzed by means of the X-ray fluorescence spectrometer?XDF?.Using inductance affinity plasma mass spectrometer?ICP-MS?analysis the trace elements and rare earth elements of rocks and ores,and USES the element geochemical analysis test results are gained by the research methods of data processing.On this basis,combined with regional geological background,geological characteristics of mining area and ore body characteristics,a comprehensive study was conducted.Through the above research,the following conclusions are drawn:1.The test and analysis data of the constant elements and trace elements of rock in the mining area can be seen that the emeishan basalt and pyroclastic tuff may be diagenetic.From ore of rare earth elements and the emeishan basalt,volcanic tuff speculated that the same characteristics,ore sources of rare earth elements,it may also have come from emeishan basalt,volcanic tuff.2.The content of rare earth elements in various rocks is very different,and the total number of Nd,Tb and Er elements is enriched,and the losses of Sm,Pr and Tm elements.The total amount of rare earth elements varies greatly:the total amount of light rare earth is relatively high,and the total amount of heavy rare earth is relatively low.It shows that the fractionation between light and heavy rare earth elements is obvious.The Eu and Ce have changed greatly,and most of the samples have been shown as Eu and Ce negative anomalies.The study of principal amount element shows that basalt is a kind of calc-alkaline-alkali transition basalt.3.The trace elements of all kinds of rocks are in the standardized spider diagram of N-MORB of trace elements.The sample curves are generally rich in the elements such as Ta,Ti,Zr and Hf,which are positively abnormal,and K and P are shown as losses.Will contain mineral trace elements in rock N-MORB standardized spider diagram and basalt,both the overall trend generally consistent,some elements characteristics are consistent,which proves that the ore-bearing rock series related to basalt material sources.4.The basalt is known as calc alkaline alkaline transitional basalt from the total alkali-SiO₂?TAS?mapping of rocks.On this basis,based on the study of the distribution pattern of rare earth elements in basalt,it is determined that the basalt in the study area is the continental tholeiite of the calc alkaline-alkaline transition type.5.Basalt classes and types of rare earth elements in ore-bearing chondrite distribution curves in consistent,therefore concluded that the study area of Cu ore source of metallogenic material and basalt rock material should be consistent,and the ore-forming material is probably from basalt itself.