Growth-focused Western Australian nickel company St George Mining (ASX: SGQ) has announced more significant results from ongoing exploration programs at its flagship Mt Alexander Project, located in the north-eastern Goldfields.
· Multiple electromagnetic (EM) conductors identified down-plunge of shallow nickel-copper sulphide deposits:
· Downhole EM surveys in the recently completed deep stratigraphic holes along the Cathedrals Belt have identified seven strong off-hole EM conductors
· New conductors have electrical properties consistent with massive sulphides
· Excellent potential for drilling of the new targets to discover more high-grade mineralisation down-plunge of the known shallow deposits at Investigators,
· Stricklands and Cathedrals Prospects MAD168 intersects thick nickel-copper sulphides 80m down-plunge of known mineralisation at the Investigators Prospect:
· Large step-out hole at Investigators intersects breccia and stringer sulphides
· Style of mineralisation is indicative of sulphides remobilised from a larger, proximal source
· Downhole EM survey identifies strong off-hole conductors
The shallow, high-grade nickel-copper sulphides discovered at the Cathedrals Belt to date are associated with mafic-ultramafic intrusions interpreted to have passed upwards from the Earth’s mantle through structures located in the northern margin of the Belt.
Deeper drilling to track the mineralised intrusive units down-plunge of the shallow deposits has successfully intersected these units in their interpreted down-dip extension; see our ASX Release dated 4 October 2019 ‘Deep Drilling Confirms Continuity of Mineralisation’.
Downhole EM (DHEM) surveys underway in these deeper holes have now identified multiple off-hole EM conductors, which are excellent targets for the discovery of further nickel-copper sulphide mineralisation.
John Prineas, St George Mining’s Executive Chairman, said: “These new EM targets from the deeper holes indicate that the large, high-grade mineral system at the Cathedrals Belt is ‘live’ at depth.
“With all EM conductors drilled in the Cathedrals Belt confirmed as nickel-copper sulphides, the new EM conductors present a tremendous opportunity to make further discoveries and to confirm the continuation of mineralisation down-plunge.
“We are seeing increasing potential for significant mineralisation at depth, and are excited to be escalating our drill programme to more intensely test this priority target area.”