The 27th Session of the Petrology Group of the Polish Mineralogical Society „Gangue rocks: insights from nature, anthropogene, laboratory and Solar System” was held from 20 to 23 October 2022 at the Cistercian Monastery and Palace Complex in Rudy. As many as 85 scientists and researchers from around the world took part in the event. During the conference, 44 oral presentations and 29 posters were presented. Traditionally, the best oral and poster presentations were awarded. The Ryszard Kryza Young Researcher Award went to Małgorzata Nowak (University of Wrocław) for the best oral presentation and Dorota Staneczek (University of Silesia) for the best poster. The organizers’ prizes were awarded to Tomasz Bajda (AGH in Krakow) for the best oral presentation and Anna Potysz (University of Wrocław) for the best poster. The event ended with a fascinating field trip to the burning coal-waste dump Anna-Wrzosy in Pszów and Geosfera in Jaworzno. We thank all participants for their presence and our sponsors and partners for their support: Labsoft, Bureau Veritas, Kuźnia Raciborska City Hall, Regional Fund for Environmental Protection and Water Management in Katowice, and Geosfera.