Fig. 3: Hand specimen, SEM, and STEM-EDS images of gold and associated mineral phases. | Communications Earth & Environment

Fig. 3: Hand specimen, SEM, and STEM-EDS images of gold and associated mineral phases.

From: Transport and coarsening of gold nanoparticles in an orogenic deposit by dissolution–reprecipitation and Ostwald ripening

Fig. 3

a Gold in quartz from the Kenty deposit, Swayze area, Ontario (Sample M17410). Photo taken with the permission of the Royal Ontario Museum (ROM); sample number refers to the ROM sample catalog. b Gold in quartz sample from the Kenty deposit used in this study. c Reflected light image of porous pyrite, native gold, and rutile. Native gold crosscuts pyrite and is intergrown with rutile. d SEM backscattered electron image of Au-bearing pyrite, native gold, and associated minerals with FIB section locations shown with red rectangles. e STEM image of nano-size Au-bearing polymetallic phase with droplet-like morphology hosted in the pyrite shown in d. f STEM-EDS element maps of Au, Ag, Te, and Pb for image shown in e. Ab albite, Ag silver Au gold, Fe iron, Pb lead, Py pyrite, Qz quartz, Rt rutile, Te tellurium. Some images have been cropped and rotated to highlight specific features.

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