Duczmal-Czernikiewicz, A. 2021. Book review: Earth materials. Introduction to mineralogy and petrology (Second edition), by Cornelis Klein and Anthony R. Philpotts, 2017. Cambridge University Press, Cambridge, UK. 616 pages. Paperback: price £44.99 ISBN: 9781316608852. Geologos. 27, 1 (Apr. 2021), 71–72. DOI:https://doi.org/10.2478/logos-2021-0008.