Projects

mt caRLTON

  • Ownership
    100%
  • Location
    150km south of Townsville , Queensland, Australia
  • Planned commencement date
    Second half 2012
  • History
    • 2006 Discovery
    • Feb 2010 Definitive Feasibility Study completed
    • Dec 2010 Conquest Board approves A$126.9M development
    • 2011 Evolution acquired 100% of Mt Carlton via Catalpa Resources and Conquest Mining merging and the concurrent acquisition of Newcrest Mining's Cracow and Mt Rawdon gold mines.
  • Style of mineralisation
    High-sulphidation epithermal
  • Contained metals
    Gold, silver, copper
 
  • Measured, Indicated and Inferred Resources (at 30 June 2011)
    V2: 24.72Mt @ 1.56g/t Au, 24g/t Ag and 0.26% Cu for 1.2Moz Au, 19.1Moz Ag and 64.4kt Cu A39 : 2.66Mt @ 185g/t Ag and 0.14% Cu for 15.8Moz Ag and 3.8kt Cu
  • Ore Reserves (as at 30 June 2011)
    V2: 9.3Mt @ 2.73g/t Au; 30g/t Ag; 0.34% Cu for 0.8Moz Au, 9.0Moz Ag, 31.0kt Cu A39 : 0.5Mt @ 552g/t Ag; 0.64% Cu for 8.3Moz Ag, 3.0kt Cu
  • Mining Method
    Open pit
  • Processing Method
    Crushing, grinding and bulk sulphide flotation to produce a polymetallic concentrate
  • Nominal treatment rate
    Design capacity of 800ktpa
  • Forecast mine life
    12 years
  • Geology
    The Mt Carlton project is a high-sulphidation epithermal style deposit with mineralisation occurring within felsic volcanic rocks on the northern margin of the Permian Bowen Basin. The project comprises gold, silver and copper primarily as copper arsenic sulphides (enargite) and silver arsenic sulphides (tetrahedrite/polybasite) and some native gold (within pyrite).

    The Mt Carlton deposit comprises two discrete zones: the large gold dominant V2 deposit and the smaller, silver rich A39 deposit. The V2 deposit is flat lying and situated 20 metres to 180 metres below surface andis 70 metres thick with a 500 metre by 500 metre areal extent. The two deposits are located 200 metres apart.

    The stratigraphy in the Mt Carlton area is almost flat lying with a gentle 10 degree southerly dip. Sulphide veins dipping at moderate to steep angles to the NW host a majority of the known economic mineralisation.
  • Mining
    Mining operations have been planned using a mining contractor with a conventional excavator and haul truck operation, mining 5 metre benches in 2.5 metres flitches.

    The V2 pit will be mined over nine years. The low-grade ore will be stockpiled and processed after depletion of the high-grade ore, to be processed post completion of open pit mining.
  • Processing
    Ore will be processed via conventional technology, consisting of crushing, grinding and bul sulphide flotation to produce a polymetallic concentrate. The Mt Carlton processing plant will have a throughput capacity of 800,000 tonnes per annum.

 


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