Prediction Of Ore Prospecting Direction In Copper Prospecting Areas Of Eastern Junggar, Xinjiang

This paper takes the Layikeleke and Wulunbulake copper deposits of copper prospecting areas of Junggar area in East Xinjiang as the research object,and quantitatively calculates the quality of mass transfer of trace elements and major elements in the process of hydrothermal alternation. According to the results of elements mass transfer calculation, the corresponding spatial relationships between the distribution characteristics of elements mass transfer and ore-body were preliminarily discussed. By using the quality of elements transfer and transfer directions, it revealed the formation mechanism of the copper deposits in experimental area, and as the test areas into the further prospecting work provided some indication and also provided the direction of further prospecting in the experimental areas.The main achievements of the research are as follows:1. Through research on the characteristics and regularities of enriched and depleted elements, we select the geochemical exploration indexes of two experimental areas. Geochemical exploration indexes of the Layikeleke copper deposit in tuff include Cu, Ag, Mo, Se, S, Ba, Cs, Rb, K₂O; Geochemical exploration indexes in tonalite include Cu, Ag, Mo, Se, S, Ba, MgO, Na₂O. Geochemical exploration indexes of the Wulunbulake copper deposit include Cu, Ag, Mo, W, S, Se, Ba, Sr and Fe₂O₃.2. The mass transfer calculation results of elements in the rocks of the Layikeleke copper deposit show that:（1） the positive anomalies of enrichment elements including Cu, Ag, Mo, S, Se are well corresponded with the copper body, the negative anomalies of depleted elements including Ba, Sr, Rb, K₂O in tuff and Ba, MgO, Na₂O, CaO in tonalite cover the prospecting section.（2） the negative anomalies of depleted elements including MgO, Na₂O, CaO in tonalite hydrothermal alteration form3. Through the mass transfer calculation results of elements in the rocks of the Wulunbulake copper deposit, the corresponding spatial relationships between the characteristics of elements mass transfer and ore-body are discussed. The results show that: the elements in the ore-bearing diorite have obvious enrichment and depletion characteristics. In the metallogenic stage, the significantly enriched elements include S, Cu, Ag, Sb, Mo, W, Se, and H₂O⁺, while the depleted elements include Ba, Sr, Rb, and Fe₂O₃, with a larger range of negative anomalies caused by the elements, covering the positive anomaly ranges with enriched elements.4. According to the regularities of spatial distribution, the paper summarized the multidimensional anomaly system consists of the negative anomalies system dominated by Ba, Sr, K₂O, CaO and so on, mineralizer elements anomalies system dominated by S, equilibrium system among mineralizer elements, Fe and ore-forming elements, as well as ore-forming elements Cu and accompanying elements Ag、Mo、Se、W anomalies system. Using the theory of multidimensional anomaly system as the guide, the prospecting directions of Layikeleke and Wulunbulake experimental areas were predicted.Tuff and contact zone of tonalite and monzogranite are focal target areas for the future in the Layikeleke experimental area; Diorite and contact zone of diorite and andesite are focal target areas for the future in the Wulunbulake experimental area...