Cleaning talc samples from iron-containing minerals Azizbek Normurodov, Feruz Badalov, Dilshod Asabayev, Mirmukhsin Botirov, Ergash Jabborov and Umidjon Khujamov E3S Web Conf., 627 (2025) 01007 Published online: 16 May 2025 DOI: 10.1051/e3sconf/202562701007