Microfossil

Author(s): David Wacey (UWA), Charlie Kong (UNSW)
Description: The structure is a 1.9 billion year old microfossil from the Gunflint chert of Canada. The image is a reconstruction of c. 180 slices through the microfossil. The slices were c. 15 x 15 microns in size and 75 nm thick. Slicing was achieved using a focused beam of gallium ions, and imaging of successive slices using a scanning electron beam of a Zeiss Auriga Crossbeam instrument at the Electron Microscopy Unit of UNSW.