滑石中的石棉。

Environ Health Perspect. 1974 Dec;9:129-32. doi: 10.1289/ehp.749129.

Talc deposits include asbestos minerals such as chrysotile and amphiboles that may be carried over into consumer products. Optical microscopy and x-ray diffraction analyses may not reveal their presence. Examples are given of electron microscopy procedures that permit detection and measurement.

滑石矿床包含诸如温石棉和闪石之类的石棉矿物，这些矿物可能会被带入消费品中。光学显微镜和X射线衍射分析可能无法揭示它们的存在。文中给出了一些允许进行检测和测量的电子显微镜程序的示例。