Study On Geological Characteristics And Genesis Of Tiereketewuzeng Iron Deposit In Xinjiang

The West Tianshan Mountain in xinjiang is one of the regions where iron ore is relatively concentrated.The iron ore deposit of Tiereketewuzeng discovered by Taicheng group in Tiereketewuzeng area of west tianshan mountain is estimated to have 1.96 million tons of mineral reserves.However,due to the sinister natural conditions and poor geographical transportation,the study of iron ore geology in this area is of low degree,and most of the iron ore research focuses on the calculation of mineral reserves,while the origin,metallogenic environment,metallogenic conditions and metallogenic model of iron ore are still to be determined.Therefore,strengthening the study on the basic geology and geochemistry of this iron deposit can further understand the geotectonic evolution and ore-forming characteristics of iron ore in the West TIanshan area,and help to deepen the ore-forming mechanism and ore-forming theory of this iron ore deposit.According to relevant geological research data show that previous collected samples,from a single hole,only can reflect the features of element geochemistry on the longitudinal and lateral changes of element geochemical regularity of the lack of systematic research,severely restricts the understanding of the causes of the iron ore,especially the important means of the present study genesis-Fe isotope geochemical characteristics are seldom involved.In this paper,the horizontal geochemical characteristics of rocks are discussed systematically.Combined with the characteristics of Fe isotope,the genesis of rocks is discussed from the perspective of element geochemistry.In this paper,based on the investigation of the regional geological background of the iron Tiereketewuzeng mine area,the geological characteristics of the mining area and the deposit were identified,the main elements,trace elements,rare earth elements and iron isotope geochemical characteristics of the deposit were analyzed,the source of metallogenic materials,metallogenic environment and metallogenic model were discussed,and the conclusions were as follows:（1）Geochemical characteristics of main elements in Tiereketewuzeng iron ore:with the increase of mineralization intensity,the content of Si O₂ also increased,and Fe₂O₃ began to accumulate,but the content of magnesium and calcium was not high.（2）Geochemical characteristics of trace elements and rare earth elements,as well as p H and Eh values,indicate that the ore-forming process of Tiereketewuzeng iron ore has gone through two stages of acidity and alkalinity,oxidation and reduction.（3）The isotopic geochemical characteristics of Fe indicate that there are four main ore-bearing layers of Tiereketewuzeng iron deposit,and the source of iron may be the joint contribution of magmatic Fe and sedimentary Fe.（4）The origin of Tiereketewuzeng iron ore is relatively complex,and the metallogenic material sources are multi-source.The early primitive iron was mainly derived from magma,penetrated into the upper part of the strata through intrusive hydrothermal fluids,and was invaded by seawater.The ore forming materials extracted were deposited in the coastal area.After the seawater was removed,the ore forming materials were transported,reformed and enriched by running water,which affected the deposition and mineralization.In this study,it is concluded that the origin of Tiereketewuzeng iron ore belongs to Marine volcanic-sedimentary iron ore.