Infinity Mining will ramp up drilling at the most prospective targets across five of its projects in Western Australia’s Central Goldfields after results from a recent 37-hole reverse-circulation (RC) program returned grades of up to 21.86 grams per tonne of gold.
The company is now planning to aim its follow-up drilling campaign at high-value targets across multiple projects later this year or early next year.
Infinity finalised its 3851m RC drilling program in March across five of its 100 per cent-owned Central Goldfields projects – Victor Bore, Great Northern, Barlow’s Gully, Camel and Coppermine. The company’s drill program was designed to test a variety of geochemical, geophysical and structural targets that were defined last year for Archaean shear-hosted gold systems and volcanogenic massive-sulphide base-metal deposits.
Management is now interpreting the drill hole data with 3D software to design its new RC campaign.
Victor Bore, which neighbours Northern Star Resources’ Kailis gold mine, is the standout of this year’s drilling program to date. Of the 16 holes drilled at the project, 13 returned gold grades of more than 1g/t. Results included a notable 1m assay of 21.86g/t gold from within an 8m intersection grading 3.46g/t gold.
At Great Northern, Infinity completed five RC drill holes, returning some significant gold intercepts, including a maximum 1m assay of 7.49g/t gold. Two of the holes featured intercepts that indicated the gold-bearing zone of mineralisation is still open at depth and continues below two other previously-drilled holes. As drilling to date has tested only shallow mineralisation to no more than 80m, deeper drilling appears justified.
Infinity also wrapped up nine RC drill holes at Barlow’s Gully, which lies along strike from several significant gold deposits including Red 5’s 4.12-million-ounce King of the Hills project and the Kailis mine. The holes, designed to test gold-bearing surface geochemical anomalies defined last year, returned more solid gold hits including a maximum 1m assay grading 3.54g/t gold.
Three RC drill holes were also sunk at Coppermine, which is 5km from King of the Hills and is prospective for both gold and base metals deposits. Assays returned a maximum 1m interval of 0.45 per cent copper from between 14 and 15 metres, in addition to 0.2 per cent zinc and 0.17g/t gold. Infinity says it may conduct a geophysical exploration survey at Coppermine later this year to test the wider tenement area for VMS-style copper-zinc sulphide mineralisation.
The company also wound up four RC drill holes at its fifth project area, Camel, returning some wide zones of low-grade gold, but no significant intercepts of greater than 1g/t.
In addition, Infinity has a further two Central Goldfields projects that are yet to see the drillbit. RC drill holes have been designed at Craig’s Rest, but cultural heritage clearance is still required. Previous drilling returned high-grade assays, including 5m grading 57.9g/t gold.
Similarly, RC drill holes were designed for Chicago, but drilling is pending cultural heritage clearance that management expects to be delivered later this year. Rock-chip samples from Chicago last year returned up to 2.37g/t gold.
Infinity Mining chief executive officer Joe Groot said: “We are very encouraged by the RC drilling results and we are confident that these will continue to inform our understanding of our projects in the Central Goldfields. Additional data is currently being interpreted by our exploration team, which will in turn be used to plan further drilling at several high value targets across multiple projects later this year.”
Infinity is developing its Central Goldfields gold targets to support the longer-term investment needed to develop its extensive portfolio of lithium, nickel, gold and copper tenements in WA’s East Pilbara region. With the Aussie dollar gold price retesting all-time highs after gaining some 20 per cent in the past year, that strategy now looks even more sound.
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By Meagan Evans
