Mapping and sampling of 39 adits at Mongolata Goldfield has ensured that a permanent record of the 1930s mines is available for historical and exploration purposes. Many of the workings are no longer accessible. Details of the production history of individual workings are also presented. Gold mineralisation occurs within multi-orientated, generally cross-cutting quartz-iron oxide (after pyrite and siderite) veins within host quartzite of the Cox Sandstone Member of basal Tarcowie Siltstone, and within an iron oxide-quartz breccia developed on a flat-lying to shallow westerly dipping thrust plane at the contact of Cox Sandstone with underlying Tapley Hill Formation metasiltstone. Geochemical analyses indicate arsenic is a reliable pathfinder for gold, the source of which may be from within host metasediments of lower Umberatana Group and mobilised by saline metamorphic fluids during the Delamerian Orogeny, then deposited in structural and stratigraphic traps. Mining has been confined to the oxidised zone where gold distribution is irregular, often occurring randomly as high-grade patches of secondary enriched specimen gold. Due to the coarse grain size and uneven distribution of gold, large tonnage bulk samples would be required to test the economic potential of the goldfield.