Scientists review the metallogenesis and challenges of porphyry copper systems above subduction zone

Porphyry copper ± molybdenum ± gold deposits (PCDs) are the most economically important magmatic-hydrothermal metallogenic system above subduction zones, which have supplied nearly 3/4 of the world’s copper, 1/2 of the molybdenum and 1/5 of the gold, as well as large amounts of silver, zinc, tin and tungsten, with however their metallogenesis remaining controversial. Now researchers in Guangzhou have reviewed the recent progress in understanding the metallogenesis and remaining challenges of PCDs.