Gravity Survey To Be Completed In Late January
Initial RC drilling at Great Boulder Resources (ASX:GBR) has confirmed the discovery of gold mineralisation over a 700m strike length at the Blue Poles Prospect, located within the Whiteheads Project north of Kalgoorlie in Western Australia.
is pleased to announce results from the maiden reverse circulation (RC) drilling program confirming the discovery of new gold mineralisation at the Company’s Blue Poles Prospect, situated within the Whiteheads project north of Kalgoorlie.
Fifteen RC holes were drilled for a total of 1,448m in late November to test primary gold mineralisation beneath recent air-core (AC) drilling intersections. Two holes were added to the program to target a lead-zinc prospect west of Blue Poles.
The programme identified primary mineralisation over a 700m strike length, including broad zones of up to 52m @ 1.02g/t Au from 28m to the end of hole in 20BPRC006.
Lower grade intersections over significant widths include 28m @ 0.61g/t Aufrom 32m, 29m @ 0.66g/t Aufrom 68m and 42m @ 0.45g/t Aufrom 28m.
Managing Director, Andrew Paterson, said these intersections are initial assays on 4m composite samples. The composite samples will now be re-sampled on an individual metre basis, which may result in the identification of discrete zones of higher-grade mineralisation within each interval.
“This is an exciting development at Blue Poles,” Mr Paterson said.
“There are two key takeaways here: firstly, we’ve identified primary gold over a 700m length in our first few RC holes, and it remains open at depth and to the south. That means the deposit is in-situ and not just a shallow supergene deposit limited to the weathered, near-surface material.
“Secondly, these intersections up to 52m wide demonstrate the potential for a large mineralised system. The next round of drilling will test the true thickness of these zones. These initial holes are on lines 100m apart, so the discovery remains at a very early stage. We are looking forward to recommencing drilling as soon as possible.”
The company is now planning a second round of RC drilling to define and extend these results. This will commence following the completion of gravity survey processing and target planning.
At Whiteheads a ground gravity survey is expected to commence in late January. Gravity data will be collected at approximately 1,400 stations on a 400 x 200m grid on the eastern side of Whiteheads, complementing a survey completed previously by Pioneer Resources Ltd on the western side of the project. The survey will assist Great Boulder to identify Carr Boyd-style ultramafic targets at depth.
The gravity data will also be used to refine the company’s interpretation of possible mineralising fluid pathways or natural plumbing systems driven by buried felsic intrusions north of Blue Poles.
Auger programs are ongoing at Whiteheads and Side Well, targeting other regional opportunities across both projects.
Further AC drilling is required to investigate mineralisation south of Blue Poles. This programme will also test other gold-in-soil anomalies identified in historic auger data north of Blue Poles within the Arsenal Trend. Later this quarter the company will complete further RC drilling at Blue Poles. In addition to exploration at Whiteheads, the company has commenced a 4,000m AC program this week at the Side Well Gold Project in Meekatharra. Drilling will continue to define zones of gold mineralisation within the Mulga Bill prospect.