Ilmenites from the Tertiary deposits relict between Rakovník and Velká Černoc (called Hlavačov gravels)
Geoscience Research Reports 41, 2008 (GRR for 2007),
pages 193–196
Abstract
Ilmenites from Tertiary sand and gravel relict show variability. There were found Mg-rich ilmenites, Mg- and Fe-rich ilmenites, Mn-low ilmenites, pure ilmenites and their altered mineral phases: pseudorutile, leucoxene and rutile.