Geological Characteristic And Geochemistry Model For Niutougou Gold Deposit In Xiongershan Region Of Western Henan

The west part of Henan Province is one of the important gold deposits producing areas in China,while the Xionger Mountain region is one of the most Au-Mo ore belt in it Through a large amount of field geological work,combining with status,development and problems in the Niutougou gold depoit,systematically studied geological characteristics of the area,and preliminarily explored the Geochemical Prospecting Model,from which gained some new understanding.The Niutougou gold deposit hosted in the angular unconformity contact zone between the Archean Tainhua Group and Proterozoic Xionger Group.As a main ore-controlling fracture,the NW fault traversing the whole deposit area and no more attention relationship mineralization with other faults,basically no fold development.While there is a close relationship between granite and mineralization zone,massive granitic batholiths and little rocks indicated a large amount of metallogenic fluid and material source.There existed Structure-Controlled Alteration-Type and Hydrothermal Vein-Type gold deposit in this area.Based on the the geological characteristics of Niutougou gold deposit,systematically sampled and studied from the wall rocks-alterated rocks and Au ore-1:50000 stream sediment-1:200000 stream sediment.Through the analysis of the 1:50000 stream sediment data,it come to a conclusion that the ore-forming indicator elements association is Au W Mo Bi Cu Pb Zn Cd Ag F;And through the analysis of the 1:200000 stream sediment data,it come to a conclusion that the Niutougou gold deposit has an elements composition of Au-W-Mo.Combined with geochemical anomaly characteristics,to establish the Geochemical Prospecting Model in Niutougou gold deposit,from which we can learn the geological characteristics both in the ore-controlling and ore-hosting,also it can be shown to us that the ore-forming indicator element association and anomaly element assemblage.What is more,the Geochemical Prospecting Model also could provide some information supports for this area even to extent that in Xionger Mountain region.