Arsenic, Chromium, and Other Potentially Toxic Elements in the Rocks and Sediments of Oropos-Kalamos Basin, Attica, Greece
Figure 4
Modes of occurrence of pyrite in Oropos-Kalamos lignite of Upper Miocene age (SEM backscattered electron images). (a) Pyrite as framboid, organic matter, and quartz; (b) pyrite as euhedral, calcite, and organic matter.
