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.

镉主要以类质同象存在于闪,少量镉以镉等独形式存在于床的氧化带，是风化淋滤过程形成的镉的次生。