St George Mining to target EM conductors in major drilling program at Mt Alexander

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11:55 09 Jul 2019

The next drilling program will start at Mt Alexander on July 22, 2019 with about 6,000 metres planned and additional metres likely to be added as further targets are prioritised for drilling.

EM conductors tested in the Cathedrals Belt to date have been confirmed as nickel-copper sulphides

St George Mining Ltd (ASX:SGQ) has generated a large number of priority EM nickel-copper sulphide targets for a major drilling program to begin later this month at the flagship Mt Alexander Project in WA's north-eastern Goldfields.

Following DHEM surveys carried out in drill holes earlier this year, 73 off-hole electro-magnetic (EM) anomalies were detected, indicating strong potential for the presence of further high-grade mineralisation.

About 42 of these conductors have been prioritised for drilling during a campaign of about 6,000 metres which is scheduled to begin on July 22.

Another 31 anomalies are undergoing further modelling prior to being scheduled for further drill testing.

READ: St George Mining to drill high-grade nickel-copper sulphide targets after raising $4 million

St George Mining executive John Prineas said: “Drilling will start shortly at Mt Alexander with a targeted program to scope out the scale of the discoveries in the Cathedrals Belt and to accelerate resource definition.

“The sheer number of EM conductors to be drilled in the Cathedrals Belt reflects the large scale of the mineral system at Mt Alexander and its potential to host substantial strike lengths of mineralisation.

“In addition to the new EM conductors, we will drill some deep holes at Fairbridge to test for the source of the many nickel-copper gossans at surface.”

READ: St George Mining intersects thick high-grade nickel-copper-cobalt-PGE mineralisation at Mt Alexander

The large number of off-hole EM anomalies detected by the DHEM surveys suggests that the nickel-copper sulphide mineralisation in the Cathedrals is more extensive than identified by drilling to date.

These new conductors are at the Investigators, Stricklands and Cathedrals prospects.

Plan view of the Investigators prospect

In addition to the discrete EM conductors, the drill program will test the large conductive area identified to the north of Investigators.

This area is a highly favourable location to host a repetition or continuation of the Investigators sulphide mineralisation along strike and down plunge.

Previous SAMSON and moving loop EM surveys identified the conductivity in this area, however precise modelling of EM plates was not possible – potentially due to the depth of the mineralisation, sub-optimal loop design or interference by surficial cover.

Mt Alexander project is 120 kilometres south-southwest of the Agnew-Wiluna Belt, which hosts numerous world-class nickel deposits.