spectacle (1) papier (1) lixiviation (1) karst (1) échange d'ions (1) Ammonium sulfate (1) Andesite (1) Scapolite (1) Sandstone (1) Rare earth metals (1) Paper (1) Nature (1) Monzonite (1) Leaching (1) Karst (1) Ion exchange (1) Granodiorite (1) Fluids (1) Earth (Planet) (1) Bauxite (1) Agent (Philosophy) (1) Areas (1) karst (1)