Drilling Expands Mulga Bill Too 5.1km
Great Boulder Resources (ASX: GBR) has obtained further promising exploration results from RC and AC drilling within the Side Well Gold Project in Western Australia.
Reported RC holes are part of the third phase of RC drilling at Mulga Bill and was completed between late June and early July and AC drilling in mid-July.
Managing Director, Andrew Paterson, said AC drilling has discovered a new gold prospect approximately 1.5km east of Mulga Bill, with gold intersected on three 100m-spaced drill lines including 8m @ 2.39g/t Au from 40m in 21SWAC101. This discovery is hosted within ultramafic lithology and the mineralisation remains open in all directions.
Regional AC drilling south of Mulga Bill has extended the prospect by another 1.4km, which means the overall strike length of Mulga Bill is now more than 5km and is not yet closed off along strike.
Further south historic drilling has only reached average depths of 30-40m and is therefore deemed ineffective to define further Mulga Bill mineralisation due to near surface depletion in the upper oxide zone.
Final results from the Phase 3 RC drilling results highlight the continuity of significant gold mineralisation on the eastern trend at Mulga Bill over 400m in strike. This mineralisation trend has received shallow drilling to date within the supergene environment and is open in all directions.
“Infill RC drilling continues to define the high-grade zones in the central area of Mulga Bill. We have now completed a fourth round of RC drilling which is continuing to build our confidence in the highgrade gold structures,” Mr Paterson said.
“We are also very excited the regional AC drilling has significantly extended Mulga Bill to the south, meaning it is now over 5km long and still open in both directions. This is a big, intrusive-related gold system with potential for significant scale and high-grade gold.
“The discovery of a completely new prospect to the east is also hugely exciting, and we will be looking to extend that discovery further in the next round of drilling.”
Phase 3 RC Drilling Results
The final 8 holes from the Phase 3 RC programme at Mulga Bill have now been received. These results include four RC holes that were drilled as pre-collars for the diamond drilling completed in mid-August.
21MBRC037 was designed to test the up-dip of an intersection in 21MBRC017, which returned 16m @ 2.35g/t Au from 100m including 4m @ 7.33g/t Au from 111m on the western zone.
21MBRC037 has extended mineralisation up-dip and to the west with intersections of 1m @ 11.0g/t from 89m and 8m @ 1.5g/t from 99m.
Diamond hole 21MBRCD042 was drilled beneath both these RC holes, with assays expected during October.
Holes 21MBRC038 to 040 were drilled on the eastern zone of mineralisation at Mulga Bill.
The new holes have been successful in proving continuity of supergene-related mineralisation along this zone with significant intercepts including 4m @ 3.34g/t Au from 88m and 3m @ 5.34g/t Au from 105m in 21MBRC039 and 8m @ 3.63g/t Au from 72m in 21MBRC040. 21MBRC038 appears to have been drilled too far east and requires follow up with further drilling.
The eastern zone of mineralisation extends for over 400m. Minimal drilling has been undertaken up or down dip with significant fresh rock intercepts including 3m @ 11.13g/t Au from 126m within 21MBRC013. The strike extensions of this zone are yet to be adequately tested by RC drilling.
For further information please visit: https://www.greatboulder.com.au/