THE DRILL SERGEANT: Rox Resources (ASX: RXL) released high-grade assay results from a recently completed diamond drilling campaign at the company’s Collurabbie nickel project, located 230km north of Laverton in Western Australia.
Rox Resources explained the overall aim of the diamond drilling program was to obtain samples of mineralisation from the Olympia deposit for metallurgical test work, and to test RC and aircore anomalies at the Olympia North prospect.
Results received from Olympia included hole CXDD004:
1.8 metres at 1.27 per cent nickel, 2.81 per cent copper, 0.09 per cent cobalt, 5.97 grams per tonne platinum and palladium (Pt+Pd) from 90.4m; and
6.05m at 1.31 per cent nickel, 1.06 per cent copper, 0.12 per cent cobalt, 2.25g/t Pt+Pd from 97.95m, including 1.9m at 2.25 per cent nickel, 2.02 per cent copper, 0.07 per cent cobalt, 3.21g/t Pt+Pd from 97.95m.
Another 2.1m interval of massive sulphides was also intersected in hole CXDD001 at Olympia from 203.2m depth.
Rox indicated the whole sample will be used for a metallurgical test, so the assay from this interval will be determined during that test work.
“These results from Olympia add to our understanding of the mineralogy and type of sulphide material present,” Rox Resources managing director Ian Mulholland said in the company’s announcement to the Australian Securities Exchange.
“With nickel, copper, cobalt and platinum group elements (Pt and Pd) all being present it is important to know the metallurgical recovery characteristics of these valuable metals.”
A further two diamond holes were drilled at the Olympia North prospect, co-funded by the Western Australian Government.
Rox noted that the target ultramafic unit seems to have thinned at depth below the aircore and RC drilling anomalies.
In hole CXDD002 immediately above the mineralised ultramafic unit, a thick porphyry unit was intersected and may be associated with potential remobilisation of nickel-copper sulphides.
Downhole electromagnetic surveys are expected to commence shortly.
Best results were:
0.2 metres at 0.48 per cent nickel, 0.25 per cent copper, 0.02 per cent cobalt, 0.53g/t Pt+Pd from 167.3m; and
0.2m at 0.91 per cent nickel, 0.81 per cent copper, 0.03 per cent cobalt, 0.62g/t Pt+Pd from 202.9m.
Current JORC 2012 Mineral Resources at Collurabbie total 573,000 tonnes at 1.6 per cent nickel, 1.2 per cent copper, 0.082 per cent cobalt and 2.3g/t Pt+Pd, for contained tonnes of 9,170 nickel, 6,880 tonnes of copper, 470 tonnes of cobalt, 42,400 ounces Pt+Pd.