St George Mining has continued to hit its straps at Mt Alexander with diamond drilling intersecting thick intercepts of the targeted ultramafic horizon along more than 4km of strike. Drilling of this stratigraphic target has returned thick intercepts of the ultramafic unit at depths of more than 280m, with nickel sulphides visible in the drill core.
The company’s deep drilling across the Mt Alexander project in WA continues to meet with success, demonstrating the potential of the wider Cathedrals Belt to host large accumulations of nickeliferous sulphides. Two deep drill holes at Investigators and a third at Cathedrals have intersected the targeted mafic-ultramafic horizon which hosts visible sulphide mineralisation, according to the company.
St George Mining’s Executive Chairman, John Prineas said:
“These results demonstrate continuity of the mineralised mafic-ultramafic units across the Cathedrals Belt over a very extensive strike length.”
“This is further evidence of the large intrusive complex at the Cathedrals Belt and increases the prospectivity for significant nickel-copper sulphide deposits down-plunge of the known shallow massive sulphide deposits.”
St George’s Mt Alexander nickel project is located in the eastern Goldfields of Western Australia approximately 100km west of the mining centre of Leonora. The project takes in a large strategic land holding over the underexplored Cathedrals Belt where the company’s nickel sulphide discoveries are strung out along more than 16km of strike.
The company’s exploration program has primarily focused on the Stricklands, Investigators, Fairbridge, and Cathedrals prospects with the Radar and Fish Hook prospects on the strike extremities of the discovery yet to be systematically tested.
St. George’s current drilling campaign kicked off early in the year with detailed resource and metallurgical drilling over the high-grade, near-surface nickel resource at Stricklands. The campaign then switched gears, launching into a deep drilling program to delineate the host nickel horizon down dip and at depth from the near surface discoveries along more than 4km of strike.
Recent drilling at Investigators has continued to deliver nickel sulphides, with drill holes intersecting more than 23m of mafic-ultramafic stratigraphy at more than 300m depth. Drill hole MAD184 intersected 23.2m of ultramafic with 5m of disseminated to blebby sulphides from 462.7m downhole, whilst MAD185 intersected a 15m thick zone of disseminated to blebby nickel sulphides from 311.3 metres downhole.
Drill hole MAD186 at the Cathedrals target 2.5km east of Investigators, returned 57.9m of mafic-ultramafic stratigraphy with an encouraging 2.1m of disseminated to blebby nickel sulphides from 337.9m downhole.
The takeaway from the Mt Alexander deep drilling program is that the prospects discovered in the near surface environment continue to considerable depth. The challenge for St George now lies in the delineation of these sulphide accumulations within the architecture of the geological environment.
St George is continuing to test the Mt Alexander discoveries utilising an innovative mix of down-hole electromagnetics and drilling with a massive target horizon outlined along more than 4km of strike and down to depths of 600m.
With results in the lab and the drill bit still crunching to depth, St George continues to prove up its nickel discovery at Mt Alexander.
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By Matt Birney
