| The study area was located in the eastern part of the Qinling fold belt,which belongs to the north Qinling division of the Qinling stratigraphic area.Qiaoduan-Waxuezi regional metallogenic tectonic belt is one of the important fault belt in north Qinling area,and the study area is located in the south.Secondary structure development provided favorable places for the migration and enrichment of ore-forming materials.NNE and NE to ductile brittle structure,with the character early ductile shearing and the late brittle fracture,is a major ore-controlling tectonic zone tungsten.The phenomena of cataclastic and mylonitization are widely developed in tectonic zones.Mineralization which may be strong or weak in structural belt is strictly restricted by it,but does not develop outside the structural belt,fully showing the characteristics of structural ore control.In the early stage,the study of gold deposits was the main one,and tungsten deposits were newly discovered.So far,there has been no research report on tungsten deposits in the region.Based on the achievements of Henan province's financial geological exploration project,this paper made a preliminary summary of the geological characteristics and metallogenic rules of tiefosi-dian tungsten polymetallic deposit,and put forward the direction for further exploration.Four tungsten polymetallic ore bodies were delineated by working,among which the quartz diorite bodies occurred in caledonian quartz diorite bodies were quartz vein type tungsten ore bodies and the surrounding rocks were diorites.The ore deposit has typical vertical zonation phenomenon in space whose ore is wolframite mixed with scheelite,and there are gold,silver,copper and other beneficial components in total.Therefore,it has a great development prospect.The results of truss section in the control sample showed that there were structural belts with abnormal apparent amplitude and frequency,which had a high possibility of mineralization and provided a reliable geophysical exploration method for the follow-up work.Geochemical analysis of Au,Ag,As,Sb,Bi,Cu,Pb,Zn,W,Sn,Mo and 11 elements was carried out to delineate 10 comprehensive anomalies,which were divided into 1 category a 2 anomaly,3 category b 3 anomaly,5 category c anomaly and 1 category d anomaly.HT8 anomaly has a good prospect of finding tungsten ore which provides effective target area for further exploration. |
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