Espagne (1) Combustion (1) Birthplace (1) Composition (1) Assaying (1) Oxidation (1) Minerals (1) X-rays (1) Sandstone (1) Red (1) Quartz (1) Percentage (1) Paragenesis (1) Mullite (1) Lignite (1) Kaolinite (1) Infrared radiation (1) Hand (1) Gypsum (1) Goethite (1) Geomorphology (1) French (1) Facial expression (1) Electron microscopy (1) Diffraction (1) Combustion, Spontaneous (1) Clay (1) Chemistry, Analytic (1) Calcite (1) Calcareous soils (1)