St George Mining Ltd (ASX:SGQ) has identified several “compelling” nickel targets from a fixed loop electromagnetic (FLEM) survey at its flagship Mt Alexander Project in Western Australia.
The new drill targets were identified near the interpreted granite/greenstone contact of the Mt Alexander Belt in parallel with lithium exploration.
A large FLEM conductor (P1) was located about 4 kilometres south of the high-grade nickel-copper-platinum group elements (PGE) massive sulphide deposit on the east-west Cathedrals Belt.
The FLEM survey also identified four additional mid to late-time conductors (P2, P3, P4 and P5) within an area extending about 700 metres by 400 metres, and is continuing at underexplored areas of interest.
Drilling of the new targets is planned for the fourth quarter.
Granite/greenstone contact area showing the latest modelled EM anomalies identified by the FLEM survey and the surface expression of the new large seismic reflector.
There is lithium too
Nickel exploration is being carried out at Mt Alexander – where St George has already made four high-grade sulphide discoveries – in parallel with a maiden lithium exploration program.
The dual-track exploration focus at Mt Alexander follows the identification in the September quarter of potentially significant, visible lithium minerals in several outcropping pegmatite dykes within a 15-kilometre-long corridor on St George tenements.
The first phase of pegmatite mapping and rock-chip sampling is almost complete and first assays from rock-chip samples submitted to the laboratory are expected next week.
A maiden program to test lithium targets will be carried out this quarter.
High priority targets
Seismic data from Line 2 (looking west) highlighting the strong reflector and adjacent plates for the latest EM anomalies. Planned drill holes are also shown.
St George Mining executive chairman John Prineas said: “Initial results from the FLEM survey that commenced last week at Mt Alexander are very encouraging with a number of conductors confirmed in the area south of the Cathedrals Nickel-Copper-PGE Belt.
“The prospectivity of the key conductive anomaly identified by the earlier moving loop ARMIT EM survey has been upgraded. The FLEM data indicates a larger and more conductive anomaly, referred to as P1 that has a geophysical signature consistent with massive sulphides.
“This bedrock conductor is located within the interpreted area of the granite/greenstone contact south of Cathedrals and is a compelling nickel target.
“In addition, P1 occurs south of a large, distinctive seismic reflector with an interpreted source below the granite intrusion and bounded by faults that may be related to the Cathedrals massive sulphide mineralisation. The strong seismic reflector is also considered a high-priority drill target.
“The granite/greenstone contact has not previously been explored and we are delighted that our systematic exploration has identified new, high-priority nickel targets for drill testing.
“We look forward to an exciting drill program in Q4 2022 that will test both these new nickel targets as well as the emerging lithium prospects at Mt Alexander.”
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