500km north-west of Brisbane, Queensland, Australia
Located on the traditional lands of the Wulli Wulli People
Year commenced operations
Style of mineralisation
Steeply dipping, low-sulphidation epithermal fissure quartz veins
Measured, Indicated and Inferred Resources (at 31 Dec 2015)
2.42Mt @ 6.48g/t gold for 504koz gold
Ore Reserves (as at 31 Dec 2015)
1.06Mt @ 5.59g/t gold for 190koz gold
FY2010A 102,760 ounces
FY2011A 101,723 ounces
FY2012A 102,565 ounces
FY2013A 102,560 ounces
FY2014A 95,064 ounces
FY2015A 93,064 ounces
FY2016A 90,626 ounces
Conventional crush-grind-CIP to produce gold-silver dore
Nominal treatment rate
Gold mineralisation is hosted in steeply dipping low sulphidation epithermal veins. These veins are found as discrete lodes (often with associated stockwork veining), composed of varying percentages of quartz, carbonate and adularia. Mineralisation has been defined in ten separate deposits (Royal, Crown, Phoenix, Sovereign, Klondyke North, Kilkenny, Tipperary, Coronation, Empire and Roses Pride Lodes.
Mining of the Kilkenny, Roses Pride, and Empire Lodes is currently being undertaken, which average between 2 – 5m in width.
The underground orebodies are accessed from a decline based on modified avoca and long hole open stoping mining methods with downhole sub-level benching with waste backfilling. Underground development was accelerated during FY13, providing the operation with greater production flexibility in FY14. With a focus on lowering costs, Cracow successfully transitioned to owner mining on 1 July 2013. This change allows more operational flexibility and a stronger focus on cost management.
Ore is free milling and is treated on site by conventional crush-grind-CIP processing to produce gold-silver-dorè. A total of 511kt was processed at an average grade of 5.92g/t gold at a recovery rate of 93.1% for FY16.
Environmental Authority EPML00770913
Cracow fact sheet – updated December 2016