APPLICATION OF COMPREHENSIVE TREND ANALYSIS ON METALLOGENIC PROGNOSIS

Wenyu gold deposit of Henan Province,located in the center of Xiaoqinling gold field,is quartz vein type hosted in Archean Taihua group,including more than 80 ore veins The trend analysis of comprehensive information suggests that Vein No.505 is horizontally the central zone of elementray geochemical field The central zone deviates northward(to Vein No.530)with the increasing depth Vertically,the Au grade and the thickness of orebody of Vein No.530 tend to decrease from the mining level to the deep But a relatively rich section is predicted at x=46.20~46.40 The result has been confirmed by mining exploration,and more reserves has been obtained,showing that the method is a practical one