Soil Geochemical Anomalies And Geological Characteristics Of Changyuanwu Tungsten Mine In Shuangjianshan Area,Jiangxi Province

The Shuangjianshan mining area is located in the north of Taqian-Fuchun metallogenic belt in northeastern Jiangxi Province.In recent years,many gold,copper,lead and zinc deposits have been found in this area,such as Niujiaoling,Hujialing and Hongmeiling,and Zhuxi super large tungsten deposit has been found in Carboniferous-Triassic nappe structural slices in the southern part of the mining area.The medium-high temperature geochemical anomalies of W,Mo and Bi,and tungsten ore bodies have been discovered in Shuangjianshan mining area.The geochemical exploration characteristics,geological characteristics,magmatic rock characteristics and metallogenic regularity of the area have been preliminarily studied,and the prospecting potential of the mining area has been preliminarily evaluated.The Shuangjianshan mining area is located in the southeast of the Jiangnan ancient island arc zone of the lower Yangtze block and the eastern end of the Pingle depression zone in the Jiangxi section of the Qinhang junction zone.The geochemical study of stream sediments and soil elements has been carried out in this paper.Geophysical anomaly characteristics of the mining area have been collected,and 1 anomaly of stream sediments and 9 anomaly of soil have been identified,of which 7 are type B anomaly and 2 are type C anomaly.Geophysical and geochemical anomalies overlap well with metallogenic structures and known ore deposits(points),which has guiding significance for prospecting in this area.The anomalies of tungsten and molybdenum in Changyuanwu area are large in scale,high in linearity and obvious in concentration center,and the anomalies between elements are well-suited and well distributed,and there are geomagnetic anomalies which overlap well with geochemical anomalies.Based on the geological characteristics of Changyuanwu area,it is inferred that there are concealed rock masses in the compound part of NE-trending F1 and NW-trending F2 faults,providing ore-forming hydrothermal fluids.It has the potential to form tungsten polymetallic deposits.This work has studied the geological characteristics,ore-controlling conditions and metallogenic regularity of Shuangjianshan tungsten deposit(point).It is considered that the tungsten ore bodies are hydrothermal quartz vein type,and the tungsten ore bodies mainly occur in brittle-ductile shear zones,superimposed in later brittle fracture zones,silicified alteration fracture zones,fissures and cleavages.The mineralization period is Yanshanian,and the gold ore bodies are closely related to ductile shear.