Light clusters as a possible source of crustal impurities: A quasi-particle approach Helena Pais, Hoa Dinh Thi, Anthea F. Fantina, Francesca Gulminelli and Constança Providência A&A, 699 (2025) A129 Published online: 07 July 2025 DOI: 10.1051/0004-6361/202553838