ROBUST Resources says a second diamond drillhole at its Batu Mas Deeps discovery has confirmed the polymetallic potential of the prospect.
Results from the second hole confirmed a broad zone of rich and intense polymetallic breccia-style mineralisation over an 83m intersection that had a core of massive sulphides 8m thick.
Assays returned 83m at 7.01% combined base metals and 0.67 grams per tonne gold equivalent (0.58% copper, 3.51% lead, 2.92% zinc, 0.18gpt gold and 26gpt silver), including 53m at 10.24% combined base metals and 0.91gpt gold equivalent (0.84% copper, 5.22% lead, 4.17% zinc, 0.23gpt gold and 36gpt silver).
The hit included massive sulphides of 8m at 37.85% combined base metals and 2.33gpt gold equivalent (0.89% copper, 25.82% lead, 11.14% zinc, 0.29gpt gold and 108gpt silver).
Robust said it was one of the best-ever intersections recorded at the Romang Island project in Indonesia.
The hole was collared 40m west of the first hole, which returned 102.8m at 5.71% base metals, including a massive sulphide zone of 6m at 54.9% base metals.
Robust managing director Gary Lewis said the latest results further confirmed the prospectivity of Romang Island.
“These latest drill results will prove very important in the planning of the development of our Romang Island project and the overall economics of what may be a world-class polymetallic discovery,” he said.
Robust shares jumped 6% to A35c – but earlier reached an intraday high of 38c.