1.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.

1.镉主要以类质同于闪锌中,少量镉以硫镉等独立物形式于床的氧化带，是风化程中形成的镉的次生物。

2.It is thought that greenockite is a seconday (supergenic) mineral, but there has been found primary greenockite in the Niujiaotang cadmium-zinc deposit in Guizhou.

2.贵州牛角塘镉锌床中既有次生硫镉的,也发现了原生硫镉。