Lead is rarely found free in nature; its major ore is the sulfide galena.
铅在自然界中很少呈游离态，主要存在硫化物和方铅矿中。
Major metal minerals in ore are pyrite, sphalerite and galena.
黄铁矿、闪锌矿及方铅矿为矿石中的主要金属矿物。
Pyrite, galena, sphalerite, native gold, electrum and joseite are the main ore minerals.
主要金属矿物是，黄铁矿、方铅矿、闪锌矿、自然金、银金矿、硫蹄铋矿。
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