Origin and evolution of ore-forming fluids in the Hemushan magnetite–apatite deposit, Anhui Province, Eastern China, and their metallogenic significance

The Middle–Lower Yangtze River Metallogenic Belt in the northern Yangtze Block is one of the most important economic mineral districts in China. The Hemushan deposit is a medium-class Fe deposit located in the southern part of the Ningwu iron ore district of the Middle–Lower Yangtze River Metallogenic Belt. The Fe–orebodies are mainly hosted in the contact zone between diorite and Triassic marble. The actinolite–phlogopite–apatite–magnetite ore...