Photomicrographs: || indicate bedding orientation. ● no bedding observable. A: Incident light (left) and ultraviolet light (right). Vitrinite particle with a highly structured surface surrounded by a fine grained matrix and amorphous liptinite. Red arrow marks a lam alginate. B: Incident light (left) and ultraviolet light (right). Vitrinite particle with structured surface (circle) surrounded by fine grained matrix, dolomite rhombs (Dolo), amorphous liptinite and different alginites (red arrows). C: Incident light. The typical occurrence of small framboidal and euhedral pyrite (Py). A large solid bitumen accumulation within a calcareous, organic-poor matrix. Large framboidal pyrite (Py) is observed around its border.