Great Boulder Resources Ltd (ASX:GBR) has uncovered even more high-grade gold during aircore drilling at Mulga Bill North prospect within the Side Well Gold Project in Western Australia.
The phase two aircore campaign focused on a 1.5-kilometre by 700-metre mineralised trend (which remains open) and hit gold in multiple holes, including:
- 6 metres at 4.23 g/t gold from 119 metres, including 1 metre at 19.09 g/t from 119 metres;
- 15 metres at 2.64 g/t from 120 metres to the end of hole, including 4 metres at 8.76 g/t from 120 metres; and
- 3 metres at 2.46 g/t from 84 metres to the end of hole.
Mulga Bill North is 500 metres north of the defined Mulga Bill resource (reading 431,000 ounces at 2.5 g/t gold) and potentially extends mineralisation for more than 1 kilometre.
There are also indications that the gold prospect remains open to the east, while end-of-hole anomalism has presented new priority targets for the next round of reverse circulation (RC) drilling.
In the meantime, Great Boulder has taken the RC rig to Mulga Bill’s priority extensional and infill targets in a phase three campaign, designed to bolster geological understanding ahead of a resource update later this year.
“Still relatively underexplored"
GBR managing director Andrew Paterson said the “fantastic results” are stacking up very nicely after two rounds of drilling.
“We use aircore drilling as a first pass to look for anomalism and pathfinder elements, so finding some of the highest aircore grades seen at Side Well to date indicates there is a lot more untested potential in this area,” he explained.
“Mulga Bill North is still relatively underexplored. With our drilling and previous work completed by Doray demonstrating that we have mineralisation over 1.5 kilometres of strike and 700 metres east-west.
“It’s a big area and we expect ongoing drilling to define more Mulga Bill-style high-grade zones which we believe have the potential to add substantial ounces to the resource inventory.”
The exploration news follows hot on the heels of Great Boulder’s tenement acquisition, which adds more than five kilometres of strike to Side Well’s Ironbark gold corridor.
The company has also pegged four other prospecting licences over vacant ground south and west of Side Well, where it plans to start immediate reconnaissance work and field mapping.