To date, high-grade nickel-copper sulphides have been intersected across a 4.5 kilometre strike of the Cathedrals Belt – spanning from the Investigators Prospect in the west to the Cathedrals Prospect in the east.
The Cathedrals Belt is inferred to further extend from the western margin of the Investigators Prospect to the Ida Fault about 2.5 kilometres to the west.
St George’s recent SAM survey has identified a large conductive feature, with an interpreted strike in excess of 300 metres, at the intersection of the Ida Fault and the Cathedrals Belt.
SAM survey data along the Cathedrals Belt. The purple areas represent the strongest conductive responses and are interpreted to represent major faults within the Cathedrals corridor
The Ida Fault is a deep, tectonic fault that is known to be associated with significant mineral deposits to the north and south of the Mt Alexander Project.
This area remains largely undrilled and is referred to as the West End Prospect.
This new conductive and structurally important area is a high priority target for the discovery of nickel-copper sulphides and will be the first target to be drilled when drilling re-commences at Mt Alexander shortly.
Additionally, four new electromagnetic anomalies have been identified coincident with major conductive features proximal to known nickel-copper sulphides at both the Investigators Prospect and at the underexplored Bullets Prospect.
Continuity of high-grade mineralisation
St George executive chairman John Prineas said: “The new target areas are located along strike or down-dip of high-grade nickel-copper sulphide mineralisation already discovered at the highly mineralised Cathedrals Belt, and are supported by three separate geophysical surveys.
“The new conductive target adjacent to the Ida Fault is particularly exciting. This area has never been drilled and we look forward to drilling this large target soon.
“We are also very enthusiastic about the new conductive anomalies to the north of Investigators as our geological model for the Cathedrals Belt supports the scope for continuity of high-grade mineralisation either at depth in the northerly down-dip direction or through the repetition of the mineralised ultramafic in the north.
“These are compelling targets for the potential discovery of further nickel-copper sulphides which could significantly expand the footprint of high-grade mineralisation at Mt Alexander.”
map of the tenement package at Mt Alexander set against RTP magnetic data, showing the key prospects and targets under exploration
The new, northern conductive anomalies are about 300 metres from the numerous high-grade intersections at Investigators.
The drilling of these new anomalies will represent a major step-out from the large mineralised horizon already established at Investigators and will test for a significant extension of the known high-grade mineralisation.