Pyrrhotite, chalcopyrite, sphalerite and galena. Broken Hill, New South Wales, Australia

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Coarse-grained pyrrhotite (brown, top left) is intergrown with chalcopyrite (yellow, top right) and sphalerite (light grey, bottom left). A small galena inclusion (white, centre) lies within silicate (dark grey).

Polished block, plane polarized light, x 80, air

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