High-grade nickel-copper sulphides confirmed down dip at Investigators
Emerging Western Australian nickel company St George Mining Limited has announced that high-grade nickel-copper sulphides have been intersected in the first drill hole completed in the drill programme underway at the Mt Alexander Project, located near Leonora in the north-eastern Goldfields.
MAD108 was completed at the Investigators Prospect to test EM conductor MAD98: X1 which was modelled at 205m downhole.
MAD108 confirms intersections of mineralisation on the MAD60 section at Investigators over a very significant 320m plunge length with mineralisation open to the north-west.
The drill core of MAD108 shows the massive sulphides intersected between 206.03m to 207.3m downhole. Coarse-grained pentlandite and chalcopyrite are evident in the drill core.
Significantly, the intersection of massive sulphides in MAD108 confirms down dip continuity over 100m from the thick, high-grade nickel-copper sulphide mineralisation in MAD60 of 5.3m at 4.95%Ni, 2.75%Cu, 0.16%Co, and 4.55g/t total PGEs from 157.9m.
The down dip plunge of nickel-copper sulphide mineralisation on the MAD60 section has been increased to 320m (see Figure 1) and mineralisation remains open to the north-west.
A downhole EM (DHEM) survey will be completed in MAD108 to assist in mapping the extent of the massive sulphide mineralisation around the drill hole including the potential for thicker sulphides and further down dip extensions of the mineralisation.
Infill drilling will also be planned to further test the strike and down dip continuity of this mineralisation.
John Prineas, St George Mining’s Executive Chairman, said: “MAD108 was a big step-out of 110m from the high-grade intersection in MAD60 and we are pleased that the drill hole has been successful in confirming a very significant 320m plunge length of mineralisation on this section.
“Importantly, MAD108 confirms that high-grade mineralisation continues at depth at Investigators. With virtually no drilling beyond 200m from surface, we believe there is potential for further discoveries at Investigators with ongoing drilling.”