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
闪锌矿中,少量镉以硫镉矿等独立矿物
矿床
氧化带，是风化淋滤过程中
镉次生矿物。
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.
镉主要以类质同象闪锌矿中,少量镉以硫镉矿等独立矿物矿床氧化带，是风化淋滤过程中镉次生矿物。
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.
贵州牛角塘镉锌矿床中既有次生硫镉矿,也发现了原生硫镉矿。
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