A CLASSIFICATION OF GOETHITE MINERALS BASED ON THE MÖSSBAUER BEHAVIOUR A. GOVAERT, C. DAUWE, P. PLINKE, E. DE GRAVE et J. DE SITTERJ. Phys. Colloques, 37 C6 (1976) C6-825-C6-827DOI: https://doi.org/10.1051/jphyscol:19766173