Mt Morgans Gold Operation (MMGO) is located within the Eastern Goldfields of the Archaean Yilgarn Craton and covers a portion of the highly gold prospective Laverton Tectonic Zone (LTZ). Within the LTZ, the Laverton Greenstone Belt (LGB) is bounded by the granitoids of the Laverton Dome to the northwest and the Kirgella Dome to the southeast and by the north-northwest trending Mt Celia and Burtville faults. The geology of the LGB is generally poorly exposed, deeply weathered and extensively covered by Tertiary laterite. Recent sediments are extensive, particularly adjacent to the Lake Carey salt-lake system, which is situated to immediately south of the MMGO.

The stratigraphy of the MMGO is dominated by mafic volcanic (mostly massive tholeiitic basalt), mafic intrusive, minor ultramafic and metasedimentary units, as well as a narrow band (width <80m) of regionally continuous BIF. This package has been intruded by concordant and discordant felsic porphyritic dykes and sills. All lithologies were subject to regional scale greenschist facies metamorphism.

The MMGO lies in the overturned western limb of the Mt Margaret anticline which plunges moderately to the south and has a north-northwest trending fold axis.

There are a number of mineralisation styles identified at MMGO, including:
- BIF hosted deposits characterised by large tonnage, moderate-high grade such as Westralia and Morgans North have yielded the bulk of the gold won from the ........

Production from the Mt Morgans Gold Operation has been primarily from the Jupiter open pit which consists of the Heffernans, Doublejay Ganymede and Saddle deposits and the Westralia underground, with additional ore sources from the Mt Marven open pit and Craic underground.

The Jupiter area - mechanised open pit mining was suspended at the end of June 2022.

The Westralia area - the underground mining method of top-down long hole open stoping with pillars was suspended at September quarter 2022.

The dominant source of ore feed to the processing plant during the FY2023 year was from low grade stockpiles with additional feed being sourced from the final harvesting of ore from Westralia underground mines.

The LG Stockpiles are located adjacent to the Jupiter ROM pad. The processing of the LG Stockpile involves loading and hauling to the ROM pad using a loader and trucks. No mining selectivity of the stockpiles is implied as the stockpile reserves are reported at an average grade and assumed that the entire stockpile will be processed at the average grade.

In March 2023 the Dacian Gold announced completion of the transition from operations to explorer/developer with the processing plant and surrounding infrastructure placed on care and maintenance.

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