10m Of Nickel-Copper Sulphides Intersected
St George Mining Limited (ASX: SGQ) has intersected thick mafic-ultramafic units with nickel-copper sulphide mineralisation at its flagship Mt Alexander Project, located in the north-eastern Goldfields of Western Australia.
Two drill holes – MAD181 at Investigators and MAD183 at Fairbridge – have delivered significant exploration success with both drill holes intersecting mineralised mafic-ultramafic units at depth.
All high-grade nickel-copper sulphides discovered along the Cathedrals Belt to date are hosted in mafic- ultramafic intrusives. The identification of further thick intrusives at depth increases confidence that additional significant nickel-copper sulphide mineralisation is present within the extensive Cathedrals Belt intrusive mineral system.
St George Executive Chairman, John Prineas, said the results in MAD181 and MAD183 further validate the company’s geological model that interprets the mineralised Cathedrals Belt commencing near surface and dipping to the north-northwest at an angle of approximately 40 degrees. Both drill holes intersected the same mafic-ultramafic intrusive unit along the target horizon.
The continuity of nickel-copper sulphide mineralisation along this structural zone is now established for more than 600m in the down-dip direction. This supports the potential for further high-grade nickel-copper sulphide mineralisation along the structure – both up-dip and down-dip from the mineralisation intersected in MAD181 and MAD183, and also along strike to the east and west.
“The first two deep drill holes in the current campaign – MAD180 at Investigators and MAD182 at Cathedrals – successfully intersected intrusive-style rocks and confirmed the presence of prospective geology at depth,” Mr Prineas said.
“The next two holes – MAD181 at Investigators and MAD183 at Fairbridge – have provided another huge leap forward with thick intersections of mineralised mafic-ultramafic units.
“A very important aspect of this discovery is the preserved nature of the 48m thick unit intersected at Investigators. This significantly increases the potential likelihood for the presence of larger accumulations of nickel-copper mineralisation nearby. “We are continuing our aggressive exploration programme, with downhole EM surveys underway and two diamond rigs drilling 24/7 to test more exciting nickel-copper sulphide targets.”
