Formation of Fe-Ti oxide and Ni-Co sulfide ores by concentric tube flow and hydrous metal-rich melt recharge into the cooling crystal mush: Example from the Hongge intrusion in Panxi region, SW China

•Hongge intrusion (SW China) hosts both Fe-Ti oxide and Ni-Co sulfide mineralization.•Concentric tube flow of hydrous melts formed gabbro-hosted oxide ore.•Hydrous melt recharge into fossilized mush formed massive oxide ore.•Previous sulfide segregation scavenged Cu and PGEs from the magma.•Coexisting oxide-sulfide ore formed due to the lack of S-rich wall rock assimilation.