The biggest PGE resource in Australia is (AFAIK) the Panton Sill...

The biggest PGE resource in Australia is (AFAIK) the Panton Sill owned by Panoramic.
"The Panton PGM Project is located 60km north of Halls Creek, adjacent to the Great Northern Highway in the East Kimberley Region of Western Australia. The project has a resource of 14.32 million tonnes at 2.19g/t Pt, 2.39g/t Pd, 0.31g/t Au on granted mining leases".

That project has been around for yonks and is still unmined. So the best you could say for "The Cup" is that the PGE numbers are "anomalous". Its a big stretch to see the PGEs at the Cup contributing to an economic operation.