![]() The mine features an existing portal at Mammoth deposit, which provides an access to the Mammoth Deeps, Greenstone, Mammoth North, East and Pluto deposits. The longitudinal sub-level caving (LSLC) method of mining is applied at the Esperanza South deposit while long-hole open stoping (LHOS) with paste fill is being applied at all other deposits. Ore mining at the Esperanza South deposit commenced in April 2017 and the refurbished water treatment plant was commissioned in October 2017. The Capricorn copper mine has seven closely located primary ore bodies, and mining being conducted from multiple ore bodies through two declines. Mining and processing of ore from Capricorn copper mine The total measured, indicated and inferred resources of the Capricorn mine are estimated at 127.89Mt containing 1,686,312t of copper metal grading at 1.32% Cu. The proven and probable ore reserves of the Capricorn copper mine are estimated at 8.47 million tonnes (Mt) containing 167,600t of copper metal grading 1.98% Cu. ![]() Mineralisation occurs in stockwork veins, breccias and as adjacent replacement of host rocks located within and close to the faults. Most of the copper mineralisation at Capricorn is hosted as a set of interconnected east to north-east trending faults and fault splays interconnected with the north-trending MGFZ. The mine comprises five deposits, namely Mammoth, Mammoth North, Esperanza-Pluto, Esperanza South, and Greenstone. The Capricorn copper project occurs within the western part of the Leichhardt River Fault Trough and is connected with a regional scale transpressional dextral strike-slip system called the Mount Gordon Fault Zone (MGFZ). The Western fold belt is further categorised into the Lawn Hill Platform, Leichhardt River Fault Trough, Ewen Block, and the Myally Shelf zones, while the Eastern belt is categorised into the Mary Kathleen, Quamby-Malbon, and Cloncurry-Selwyn zones. The Inlier comprises early to middle Proterozoic rocks and hosts three tectonic units, namely the Western fold belt, the Kalkadoon – Leichhardt belt, and the Eastern fold belt. Located approximately 125km north-west of Mt Isa in north-west Queensland, the copper mine is hosted within the Western Fold Belt of the Mount Isa Inlier. Geology and mineralisation of Capricorn copper mine The concentrator refurbishment was completed in 2017 while the mine was recommissioned in the fourth quarter of 2017. The study concluded that the desired operational efficiencies could be achieved through the maintenance of existing facilities, replacement of outdated technology, expansion of existing production system, and construction of new equipment / facilities.Ĭommissioning of new process equipment reduces the project’s risk profile. A restart and refurbishment project (RRP) has been established to estimate the capital costs and undertake readiness programmes required to restart mine operations. Details of the Capricorn refurbishment and restart programmeĬapricorn Copper has initiated restart execution studies (RES) to identify the prospects of restarting operations at the Capricorn copper mine. ![]() It is expected to generate approximately 220 full-time jobs. The project created more than 350 full-time operational and construction jobs during 2017. Non-Metallic Mineral Mining and Quarrying. ![]()
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