limon (1) papier (1) aquifère (1) fer (1) dureté (1) eaux souterraines (1) dissolution (1) couverture (1) argile (1) Dissolution (1) Composition (1) Minerals (1) Groundwater (1) Water (1) Sphene (1) Silt (1) Sandstone (1) Pyroxene (1) Paper (1) Magnetite (1) Iron (1) Hardness (1) Geochemistry (1) Epidote (1) Conglomerate (1) Clay (1)