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Home / Copper / St George continues to unlock the mineral system at Mt Alexander

St George Mining

  • ASX: SGQ
    • Cu
    • Ni

St George continues to unlock the mineral system at Mt Alexander

  • 22 April

Modelling of geophysical data acquired from a recent MT/AMT survey has provided exciting new nickel-copper sulphide targets for growth focused Western Australian nickel company St George Mining’s (ASX: SGQ) forthcoming drill programme at its flagship Mt Alexander project, located in the north-eastern Goldfields.


HIGHLIGHTS:

Priority drill targets for nickel-copper sulphides identified by Magnetotelluric (MT) and Audiomagnetotelluric (AMT) survey data:

  • 3D inversion modelling of MT/AMT survey data confirms conductive features located in positions geologically favourable for nickel-copper sulphides

  • Faults and other structures likely to have been a control on the formation of deposits have been mapped by the MT data, enhancing targeting strategies

  • A large conductive feature has been identified below the shallow high-grade deposit at Investigators and below the current extent of drilling

  • New nickel-copper sulphide targets have also been identified at depth within the Radar, Cathedrals, Fairbridge and Investigators East Prospects in areas yet to be tested by drilling

  • Additional MT surveying commenced this week, which will include coverage of the eastern extension of the Fish Hook Prospect

Forthcoming drill programme being planned with a focus on making new discoveries:

  • Multi-rig drill programme will test new conductive features with potential for the discovery of new nickel-copper sulphide deposits

  • Extension and infill drilling of known deposits will also continue with more than 30 electromagnetic (EM) conductors identified in 2019 that are yet to be tested

  • Resource definition at the Stricklands shallow high-grade deposit will be completed

John Prineas, St George Mining’s Executive Chairman, said: “The MT survey data is showing us that there is an extensive and deep-reaching structural network at Mt Alexander, which is typical of large nickel sulphide systems.

“We are seeing new conductive zones along strike and down-dip of known nickel-copper sulphide deposits – these locations are very favourable for the potential discovery of additional mineralisation.

“The deeper conductive zones start at 300m to 500m below surface so we are still looking at depths that are relatively shallow compared to most current nickel sulphide mines in Western Australia.

“With four shallow, high-grade discoveries across a 5.5km strike of the Cathedrals Belt, we have always believed that if the system is that long it must also be deeper than the extent of the current discoveries.

“The new MT data increases our confidence that there are more nickel-copper sulphide deposits to be discovered at Mt Alexander. We look forward to the start of our upcoming drill programme.”

View full announcement

Peter Klinger

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