The X-ray diffraction analyzes of two ferromanganese crust samples found at the base of the Klaus red Jurassic limestone beds of the Unterberg formation indicate pyrolusite as...
For the samples labeled (1) concentrations after the first leach to remove the carbonate fraction (after Barrett et al., 1987, doi:10.1016/0016-7037(87)90278-X); labeled (2) - after the second acid-re
This file includes new data on the ratio of silica vs. aluminium (Si/Al) in the bulk rock from the core Bch-1, western part of the Bohemian Cretaceous Basin. The interval covers the Lower Turonian thr
