Soil geochemical characteristics and the prospecting effect of Dalong area in Ningguo City of Anhui Province

Dalong area is located at the junction of Anhui and Zhejiang Province, with poor terrain condition. Systematic geological survey has never been carried out in this area and significant progress has not been achieved in the prospecting work. Through the 1:10 000 soil geochemical soil survey in the study area, the authors in this paper have adopted the theories and methods of the coefficient of variation, enrichment coefficient and enrichment discrete characteristics to analyze geochemistry statistics of twelve kinds of trace elements, and the results show that five elements of Ag, W, Mo, Bi and Zn have great metallogenic potential. Twelve kinds of trace elements have been analyzed with correlation and R-factor analysis and three sets of main mineralization element combinations were classified, which were Pb-Zn, W-Bi and Mo-Ag-Cu-As-Sb-Hg. A hundred and fifty-eight single element anomalies and eighteen comprehensive anomalies were identified in the study area. Besides, Six comprehensive anomaly zones were identified. Five integrated anomaly zones with good metallogenic conditions were tested through trenching and drilling methods to define 15 tungsten, molybdenum and lead zinc-ore bodies, which indicated good prospecting result.