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1954年3月,我们在四川省北碚的温泉沉积物中,采得了一种铅黄矿物标本,它呈柠檬黄色,表层覆盖了一层白色的石灰华,矿物的形态为葡萄状、肾状结构。标本放置23年以后,铅黄转变为橙红色
In March 1954, we collected a sample of lead-yellow minerals in the hot spring sediments of Beibei in Sichuan Province. It is lemon-yellow in color and the surface is covered with a white travertine. The mineral forms are grapes and kidney-shaped structures . Twenty-three years after the specimen was placed, the lead turned orange-red