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铟在地壳中的丰度为0.1ppm,主要富集于硫化矿,特别是闪锌矿内。目前闪锌矿是商品铟的主要来源。
Indium in the crust of the abundance of 0.1ppm, mainly concentrated in sulphide ore, especially sphalerite. Sphalerite is currently the main source of indium products.