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矿物镉与锌共生,其比例为1:1,000～1:12,000。镉比锌还易于形成络合物,对有机化合物的结合性能较弱。由于它在空气中很稳定,所以很早就大量用于铁器的表面精制防腐、电镀工业(此两项1968年的用量约为世界产量的45%)。此外还用于化学工业、原子工业等。1911年世界年产量仅80吨,而1965年却达12,000吨,1969年则为17,000吨。主要出产国有美国、加拿大、比利时、澳大利亚、墨西哥和秘鲁。
Co-mineral zinc and cadmium, the ratio of 1: 1,000 ~ 1: 12,000. Cadmium is also more likely to form complexes than zinc, with less binding to organic compounds. Because it is very stable in the air, so long ago for a large number of surface treatment for iron and steel corrosion, electroplating industry (the two 1968 accounted for about 45% of world production). Also used in chemical industry, atomic industry and so on. The world annual output in 1911 was only 80 tons, compared with 12,000 tons in 1965 and 17,000 tons in 1969. The main producing countries are the United States, Canada, Belgium, Australia, Mexico and Peru.