1. Qingdao Jinxing Gold Mining Company Ltd�� ��Qingdao 266748��Shandong��China; 2. College of Earth Sciences��Jilin University��Changchun 130061��China

Lode No. 1 is the largest gold-bearing quartz vein in Jiudian gold deposit�� Based on the summaries on the geological and geochemical characteristics��the mineralization enrichment and the geological and geochemical indicators of the lode��the probable location of deeply-seated ore body targets are predicted�� Lode No. 1 is controlled by a NE trending��over 6 000 m long and averaging 3 m wide fault��and belongs to gold-bearing quartz vein in type�� The gold-ore body occurs mostly in widening location of ore-controlling fractures and changing location of trendency��and the orebodies group distributes in enrichment position of lamprophyre and dioritic porphyrite�� The widen portions of the faults��the coexistence of intense silicification and berecitization��the development of quartz stockwork and veinlet and the presence of lamprophyre and diorite porphyrite are the indicators for the probable sites of deep-seated ore bodies�� Based on the summary of the studied resuets of more than 1000 geochemical samples�� the association of As��Sb and Hg belongs to the head halo elements and the intense anomaly positions and samples reveal the deep-seated ore bodies�� Based on above discussion��four ore body targets have been defined��in which two were tested in Lode No. 1 by tunnel engineering��