Wikimedi'Òc

Auriferous, uraninitic, hydrocarbon-rich stromatolite rock (Carbon Leader Gold Ore, South Africa) 2 (14533147268).jpg - Tillman

Carbon Leader Gold Ore, Witwatersrand South Africa 4.jpg - Tillman

Carbon Leader Gold Ore, South Africa 3.jpg - Tillman

Gold-quartz hydrothermal vein (deep subsurface gold mine at Witwatersrand, South Africa) (16844684440).jpg - Jacopo Werther

Auriferous, pyritic, quartz-pebble conglomerate (gold ore) (Vaal Reef, Witwatersrand Supergroup, Neoarchean, 2.76-2.89 Ga; Stilfontein Mine, North West Province, South Africa) 3.jpg - Ser Amantio di Nicolao