照壁山铝土矿赋存于中三叠统北衙组与上三叠统中窝组的不整合接触面上。富矿围岩为上三叠统中窝组灰岩。沉积相为局限海湾-泻湖-潮间相。铝矿物主要为一水软铝石。矿石结构主要为豆状-鲕状结构,矿床成因为古风化壳沉积型。
Zhaobishan bauxite occur in the unconformity contact surface between middle triassic beiya formation and upper triassic Zhongwo Formation.Ore-hosting wall rocks are limestone of Zhongwo formation.Sedimentary facies is limitated Gulf phase-lagoon phase-intertidal phase.Al2O3.H2O is the most important mineral.Lenticular-oolitic structure is the mainly ore structure.The deposit,in genesis,belongs to paleo-weathering crust type.