///The Chayuan Mn-Fe deposit in Zunyi,Guizhou lies in the Zunyi type Mn ore belt. The deposit occurs in the base of the Upper Permian Longtan Formation. The host rock is a clay rock with pyrite. The deposit is an old weathering crust one with the ore of primary Mn-Fe carbonate minerals which were formed from Mn material derived from the Late Permian basalt.