FEI NanoFab Scanning Electron Microscope with Oxford Energy Dispersive Spectrometer

This small “Death Star” is a common airborne particulate contamination. It was a component of incinerator fly ash which was causing discoloration on the surface of stored molded parts. All the non-combustible components get fused together in these mixed silicate spheres. Micrograph taken at a magnification of 2000X.