AUTHOR=Gao Zhiyong , Zawala Jan , Kowalczuk Przemyslaw B. TITLE=Editorial: Surface Chemistry of Flotation JOURNAL=Frontiers in Materials VOLUME=7 YEAR=2020 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2020.595146 DOI=10.3389/fmats.2020.595146 ISSN=2296-8016