THE DRILL SERGEANT: Havilah Resources (ASX: HAV) has claimed drilling conducted by its Joint Venture partner MMG Exploration has discovered copper mineralisation at the Croziers Dam prospect.
Corziers Dam lies roughly half way between the company’s Portia and Kalkaroo deposits in South Australia.
The best intersection achived by diamond drillhole BNG13DDOO1 was 12.5 metres at 0.46 per cent copper from 213.5 metres depth.
Havilah explained the drillhole was designed to follow up copper indications encountered by earlier shallow aircore drilling.
The hole demonstrated copper anomalism for almost its entire length.
Skarn rocks in drillcore from Croziers Dam prospect, with
abundant sulphide minerals including chalcopyrite (copper ore),
magnetite (grey), pyrrhotite (bronze) and other dark greenish
calc-silicate minerals. Source: Company announcement
“Apart from the untested potential at the Croziers Dam prospect, there are extensive areas of granite contact on Havilah’s exploration licences that could potentially spawn similar mineralisation,” Havilah Resources managing director Dr Chris Giles said in the company’s announcement to the Australian Securities Exchange.
“The indications of IOCG style alteration are also significant because they are evidence that such mineralised systems were possibly active on the Benagerie Ridge, warranting further drilling of likely targets.”
Havilah highlighted another four diamond drillholes carried out by MMG, which has also located red hematite alteration, which it said is often associated with hydrothermal brecciation (fragmented and shattered rocks).
The company said these geological features are commonly observed in alteration zones marginal to iron oxide copper gold (IOCG) deposits, citing those in the vicinity of the Olympic Dam deposit as an example.
One of these four drillholes intersected minor associated copper mineralisation including 1.2m at 0.55 per cent copper and 0.1 grams per tonne gold from 249m depth.