Figure 9From: Greigite: a true intermediate on the polysulfide pathway to pyriteTypical FEG-SEM picture showing the octahedral morphology of pyrite grains formed at 200°C. Particles are 0.5 – 1.2 μm in size. Inset: Close-up of one particle showing the aggregation of smaller octahedra (50 – 100 nm).Back to article page