title: [Evidence of mineral impurities in talc].
abstract: Polarizing microscopy, X-ray powder diffraction and differential thermal analysis can be used to detect small amounts of minerals which may occur in talcs as impurities. The characteristic features of chlorite, asbestos, magnesite, quartz and other minerals recognizable through these methods are described.
authors: VEB Pharmazeutisches Kombinat GERMED Dresden.
authors: K F
authors: KF
authors: Landgraf
mesh_terms: D004055:Differential Thermal Analysis; D004340:Drug Contamination; D008903:Minerals / Q000032:analysis*; D013627:Talc / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D008903:Minerals; D013627:Talc
vernacular_title: Zum Nachweis mineralischer Verunreinigungen in Talk.