Metallogenic model and ore-controlling factors of lead-zinc deposits in the Qiao'er-Tianshan area of western Kunlun Mountains
In recent years,a group of super large,large and medium lead-zinc deposits,led by Huoshaoyun Pb-Zn deposit,have been discovered in the Qiao'er-Tianshan area of western Kunlun Mountains.Through the study of the spatiotemporal distribution and formation mechanism of typical deposits,it is believed that the Mesozoic basin lead-zinc deposits in the Qiao'er-Tianshan area of west-ern Kunlun Mountians can be divided into three types in terms of genesis:sedimentary metasomatic type,MVT type,and magmatic hy-drothermal type.Pb and S isotope analysis shows that the lead-zinc sulfide in this area is featured with deep source,and the biological organic sulfur partly participated in the late mineralization.C and O isotope analysis reveals that the ore-forming hydrothermal solution belongs to the primary origin.A regional mineralization model was establised by summarizing the sources of ore-forming materials and ore-controlling elements.Sedimentary facies and contemporaneous faults are the main ore-controlling elements of sedimentary meta-somatic deposits,fault structures are the main ore-controlling elements of MVT type deposits,and magma intrusion and hydrothermal contact metasomatism are the main ore-controlling elements of magmatic hydrothermal deposits.
deposit typemetallogenic modelore-controlling elementlead-zinc depositQiao'er-Tianshan in western Kunlun Mountains
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