Mineralization enrichment regularity of gold deposit in Shangzhuang, northwestern Jiaodong

Shangzhuang gold deposit located in the Wangershan fault zone of northwestern Jiaodong is of meso-hypogenic altered rock type. The ore bodies occur at the hanging wall and footwall of Wangershan fault in vein or irregular shapes with the NE strike, NW trend, 30°-60° in dip and the lateral trending of SW. The ores are composed of pyrite, quartz, sericite, bismuthinite, native gold, bismuth sulfosalt minerals, chalcopyrite, etc., shown as brecciated structure and vein structure with metasomatic dissolution textures. The wall rock alteration is mainly described as phyllic alteration and silicification. The mineralization of this deposit is controlled by structure and altered rocks. The ore-controlling fault structures of this deposit is Wangershan fault, of which the intersection of major fault and secondary fault is the main ore-bearing position of this gold deposit, and the larger arc curved position is a favorable part for ore body occurrence. On the plane, the ore body is shown as equidistant pinch-out reproduction.