
Chalcopyrite and rutile. El Salvador, Chile


250µm
Anhedral chalcopyrite (yellow, top right) is intergrown with quartz (light grey, right centre). Pounded to euhedral rutile (grey-white, centre left) is disseminated throughout the host rock. The poorly polished dark grey gangue is phyllosilicate.
Polished block, plane polarized light, x 80, air
