Origin and Role of Kaolinization in Roll-Front Uranium Deposits and Its Response to Ore-Forming Fluids in the Yili Basin, China

Figure 2

Host strata deposited several coal–sand–coal stacks represent braided river delta sediments. Orebodies occur at downsizing sites of host sandbodies and near contact zones with underlying or overlying mudstone. Lenticular orebodies are located in sandbodies of J₂x³; roll-shaped and tabular orebodies are comparably located in sandbodies of J₁s¹ and J₂x¹.