THE DRILL SERGEANT: St George Mining (ASX: SGQ) reported a nice, big thick intersection of nickel-copper sulphide mineralisation at the company’s Mt Alexander project in Western Australia.
St George Mining reported drill hole MAD71, undertaken at the Stricklands prospect, intersected 17 metres of nickel-copper sulphide mineralisation from 37.5m downhole comprising massive, matrix, stringer, brecciated and disseminated nickel sulphides.
The intersection included massive nickel-copper sulphides comprising a total of 10.1m of the overall intersection.
St George explained that MAD71 mineralisation is open to the north and west.
The hole was drilled within a large SAMSON EM anomaly, which largely remains untested.
A downhole EM (DHEM) survey will be completed in MAD71 later this week, after which further drilling at Stricklands will be prioritised following review of the survey data.
“The results in MAD71 are outstanding with thick widths of high grade mineralisation at shallow depths,” St George Mining executive chairman John Prineas said in the company’s announcement to the Australian Securities Exchange.
“This is very favourable for the economics of a potential mining operation at Mt Alexander.
“We have already established recurrent high-grade mineralisation over a 3.5 kilometres strike length in the Cathedrals Belt.
‘Now, with the exceptional intersection in MAD71, the confidence in the resource potential at Mt Alexander continues to build.”
St George completed a fixed loop EM (FLEM) survey earlier this year that identified the large EM anomaly at the Stricklands prospect.
The EM anomaly was tested previously by drill hole MAD49, which intersected a 42.5m thick ultramafic unit returning:
18.86m at 0.42 per cent nickel, 0.16 per cent copper, 0.02 per cent cobalt and 0.36 grams per tonne total PGEs from 31.8m; and
3.36m at 2.09 per cent nickel, 1.18 per cent copper, 0.09 per cent cobalt and 1.82g/t total PGEs from 50.66m.
MAD71 was drilled 15m to the north of MAD49 to test the continuity of the mineralised ultramafic and the potential for further nickel-copper mineralisation.
The hole displayed over 10 cumulative metres of massive nickel-copper sulphides with hand held XRF readings averaging 5.5 per cent nickel and 2.1 per cent copper.
St George indicated a conclusive determination of the nickel, copper, cobalt and PGE values of the sulphide mineralisation will be confirmed when laboratory assays are available.
The company considers the thickness of the cumulative ultramafic and the volume of nickel-copper sulphides returned to date to be supportive of further mineralisation being intercepted to the west and north of MAD71, where the strong associated SAMSON EM anomaly remains untested.