There are some independent minerals of Cd, which are secondary minerals formed during weathering and leaching, such as greenockite, otavite and oxides of Cd in the oxidized zone of the deposit.

镉以类质同象存在于闪锌矿中,少量镉以镉矿等独立矿物形式存在于矿床的氧，风淋滤过程中形成的镉的次生矿物。