Mineral Characteristics And Metallogenic Laws In Haduhulashan Area Of Yanxian County,Xinjiang

The HADUHULASHAN area is located at the junction of the Ten-zan Orogenic belt and the Tarim Landmass,with the Ten-zan Orogenic belt to the north and the Tarim landmass to the south,there are three Grade III tectonic units spanning the Erbin mountain-kumish Remnant Basin,the South Tianshan mountain-Hora continental margin rift,and the Kurutag continental margin block.This area experienced many times of opening and closing from Proterozoic Asia Ocean to late Paleozoic South Tianshan Ocean.The tectonic types of the paleo-continental margin and sedimentary basin change frequently,and the tectonic deformation during and after collision is complex and varied,and the tectonic and magmatic activities are intense.According to the metallogenic belt,the study area is divided into Aierbin metallogenic belt,Kuokeshaler metallogenic belt,and Kuruktag metallogenic belt.In this paper,the geological features,geochemistry features and metallogenic conditions of typical deposits in each metallogenic belt are analyzed.Through comparative analysis,the relationship between ore-controlling factors and ore-forming is summarized,and the ore-forming prospective area is divided.The relationship between strata,structure,magmatic rocks and mineralization is discussed.The XINGDITAGE group of Lower Proterozoic is unique in gold mineralization.The lower carboniferous YEYUNGOU formation is unique to copper,gold and tungsten mineralization.The lower carboniferous YEYUNGOU formation is unique to copper,gold and tungsten mineralization.The carboniferous rock body is closely related to copper and gold mineralization,and the Permian rock body is closely related to tungsten mineralization.The contact part of the tectonic unit is the favorable part for mineralization,and the contact part of the eastern end of the South tianshan-Hora continental margin rift with the Kuruktag continental margin massif favorable conditions for the formation of sicarn type tungsten deposits under the contact and metasomatism of carboniferous pyroclastic rock,limestone and permian acid intrusionsThis paper dissects the metallogenic geological conditions of the DASHANKOU gold deposit,the BAOWENBULAKE sedimentary-metamorphic copper deposit,the HAIMAGOU West Wollastonite tungsten deposit and the CHAWULU Magmatic Hydrothermal copper-gold Deposit,and analogizes the metallogenic conditions of the typical deposits,the geological characteristics of the study area.metallogenic processes,spatial distribution of mineral information,and geochemistry anomalies are summarized,the prediction types of copper polymetallic and gold deposits in the area can be divided into three types:fractured altered rock type Gold Deposit,Magmatic Hydrothermal Type Copper Gold Deposit,sedimentary metamorphic rock type copper deposit and SICARN type tungsten deposit.Twelve prospecting areas have been delineated.