Porphyry-type molybdenum deposits in the eastern Qinling Mo belt, central China

摘要

The Eastern Qinling mineralizing belt of porphyry-type Mo deposits is located in the south margin of North China Platform. About 40 /100 explored Mo resources of China are stored in that belt. Mo mineralization is Related with Yanshanian (161-104 Ma) small intermediate to acidic porphyry bodies. As the porphyry Bodies intruded into Archean to middle Proterozoic carbonate rocks and alumino-silicate rocks, Porphyri-type, skarn-type and hornfels-type Mo ores were formed with different types of wallrock Alteration. Ore-forming fluids are characterized by H_2O-CO_2-NaCl with lower to middle saline (0-12.7 /100 NaCl).