- Diamond drilling of EM conductors is underway at the Mt Alexander Project
- First EM conductor target is at Investigators Prospect with modelled conductivity of 82,000 Siemens
- All EM conductors tested in Cathedrals Belt Prospect so far, have been confirmed as nickel-copper sulphides
- The quantity and location of the EM conductors supports the potential to increase high-grade mineralisation
- EM survey over the northern section of the Cathedrals Belt has been completed with new data being reviewed
- EM survey is being fast-tracked for the Fish Hook Prospect where a strong nickel-copper soil anomaly has been identified
St George Mining has commenced diamond drilling of nickel-copper sulphide targets at the Mt Alexander Project.
The Mt Alexander Project is located 120 kilometres south-southwest of the Agnew-Wiluna Belt which hosts several world-class nickel deposits.
The project includes five granted exploration licences. One of these (E29/638) hosts the Cathedrals, Stricklands and Investigators nickel-copper-cobalt discoveries which are held in a joint venture between St George and Western Areas.
More than 6000 metres of drilling is planned with additional targets expected to be added to the program as results from ongoing EM surveys are reviewed.
“With a large number of high priority EM targets to test, this is the most exciting drill programme we have launched at Mt Alexander to date,” Executive Chairman John Prineas said.
The first three EM conductors scheduled for drilling are located at the Investigators discovery.
The first to be drilled is located approximately 50 metres north of the nickel-copper sulphides intersected in MAD45. This represents a large step-out to the known mineralised zone. This particular EM conductor has a 30-metre strike length and conductivity of 82,000 Siemens.
“Many of the EM conductors to be drilled represent a large step out from known massive sulphide mineralisation, so there is excellent potential for this programme to significantly extend the footprint of high-grade nickel-copper sulphide mineralisation,” John said.
“Ongoing EM surveys are identifying new EM targets in under-explored areas of the Cathedrals Belt – providing further support to the emerging large scale mineral potential at Mt Alexander,” he added.
The EM conductors all have electrical signatures that are consistent with massive nickel-copper sulphides and are located in the Cathedrals Belt area. All EM conductors tested so far at the Cathedrals Belt have been confirmed to be nickel-copper sulphide mineralisation.
A fixed loop EM (FLEM) survey has recently been completed over the north section of the Cathedrals Belt, where the ultramafic units are interpreted to extend down-dip to the north and northwest. This area has potential to host continuous high-grade mineralisation at depth and down-dip.
The FLEM survey has recorded several anomalous responses which are currently being reviewed. Close-spaced follow-up MLEM surveys will be used to redefine the modelling.
So far, the MLEM survey has commenced to the east of the Cathedrals Prospect with results already indicating an anomalous response along the eastern extension of the nickel-copper sulphide mineralised trend.
The MLEM survey will be extended to the Fish Hook Prospect. The nickel-copper soil anomaly identified at Fish Hook is similar to a magnetic feature interpreted to represent mineralised ultramafics.
Immediate follow-up will be conducted in response to the early positive exploration results.