Gold nuggets, the inside story. Petrographic observations

A series of 40 PowerPoint Notes pdf presentations illustrating and describing the external and internal structure and composition of specimens of gold nuggets and large particles of visible gold from Australia (WA, NSW, Vic, Q), Papua New Guinea and Thailand. Each presentation provides a stand-alone description of one or two specimens, and whole collection provides Supplementary data supporting a publication. Includes studies of the Liversidge Collection from the Natural History Museum, London.\nLineage: Optical and scanning electron microscope (SEM) images of external surfaces of gold nugget specimens, and of polished sections of the specimens, before and after etching with dilute cyanide solutions. Chemical analysis by SEM energy dispersive spectroscopy. Electron backscatter diffraction images of two specimens.