Study on the metallogenic physi-chemical conditions of Xiaomiaoshan gold deposit

摘要

The Xiaomiaoshan gold deposit in the Dingyuan County, Anhui Province, locates at the north margin of the Daibe orogen and east of the Tancheng-Lujiang Fault Zone. The strata crops out in the mining area is gray quartz keratophyre of Xileng Formation of Zhangbaling Group (Pt_(2x)), and the strata in the periphery of the mining area is sericites phyllite and dolomitic marble of the Beijiangjun Formation (Pt_(2b)). The strikes of faults in this area are mainly north-south, and faults with strikes of northeast and northwest are secondary ones. Monzonitic granite and lamprophyre penetrated in the mining area in Yanshanian. Lamprophyre dikes, which were normally weathered into yellow regolith.