Controls on Corundum Formation: Metasomatism of Ultramafic Rock, Nattivit, South-East Greenland - Poulsen, Majken D.; Keulen, Nynke; van Hinsberg, Vincent; Kolb, Jochen; Frei, Robert; Thomsen, Tonny B.; Nielsen, Olga; Vennemann, Torsten (Journal of Petrology, 2024)