Rio Tinto has admitted it has been working on a massive copper-gold-silver find in the Patterson area of the East Pilbara in Western Australia, confirming rumou rs which have been circulating for many months.
Rio said it could not yet give a resource size for the find because more work was needed. But gold intersections range from 0.21 grams per tonne to 1.22 grams, copper grades ranging from 0.36% to 1.08% and silver grades from 0.42% to 4.34 grams to the tonne.
A more detailed analysis found grades of copper as high as 2.23% and 2.07%, gold grades of 5.4 grams to the tonne and silver grades as high as 26.4 grams and more than 17 grams over small six metre intersections.
“Assay results to date indicate relatively wide intersections of copper mineralisation associated with gold and silver. Vein style copper, gold and silver mineralisation beneath relatively shallow cover which ranges from 50 to 100 m.
“The mineralisation remains open at depth and to the east, north, and south,” Rio said.
Rio Tinto’s drilling is around 150km north-north-west of Telfer and last year news emerged that it had built a 50-person worker camp in the remote location and was building an airstrip to support its exploration campaign.