Plate P7. Vitrinite, pyrite, and oil inclusions. 3. T5863; Hole 1118A; 744.27 mbsf. Telovitrinite with fluorescing cell walls and abundant layers of pyrite. This plate has been exposed to illustrate the pyrite. The brighter areas are unaltered pyrite, but most of the original framboidal pyrite has been altered to iron oxides. It is thought that this alteration has occurred during drying of the sample and indicates that the pyrite is highly reactive (reflected light; field width = 0.22 mm; mean vitrinite reflectance = 0.36%).