Descriptors | Cryolite, Aluminium ores, Metalliferous minerals, Determination of content, Samples, Specimen preparation, Silicon dioxide, Fluorine, Iron, Sodium, Aluminium, Test equipment, Calibration, Solutions, Gravimetric analysis, Photometry (chemical analysis), Volumetric analysis, Distillation methods of analysis, Flame photometry, Spectrophotometry, Atomic absorption spectrophotometry |