硫镉矿（Greenockite）是镉的硫化物，化学成分CdS，在所有矿物中，它的含镉量最高。
硫镉矿一种黄褐色或红色的矿石，硫化镉，为镉的唯一的矿石。
A yellow to brown or red mineral, CdS, the only ore of cadmium.
在贵州牛角塘镉锌矿床中既有次生硫镉矿的存在，也发现了原生硫镉矿。
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.
菱镉矿的晶粒微小，一般只有几个微米，大者几十微米，常与菱锌矿、 硫镉矿共生或伴生在一起，呈疏松集合体、皮壳或薄膜状产出。
Otavite grains are very tiny in size, being commonly only several microns, and the large ones are several tens of microns.
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