Twenty Seven Co Ltd (ASX:TSC) has confirmed the presence of multiple large gold-in-soil anomalisms at the 100%-owned Yarbu Gold Project in WA’s Goldfields through a recently completed auger drilling campaign.
Results confirmed surface gold mineralisation across three broad areas identified in a 2021 first-pass auger drilling program with the anomalism believed to be associated with fold hinges and fold limbs.
A potential new target area has been identified in the northern region of the tenement package with a new gold-in-soil result of 92.7ppb gold.
Tightened area of anomalism
Non-executive chairman Rohan Dalziell said: “This latest auger campaign confirms gold mineralisation across the three broad areas within the Yarbu Project and has tightened the area of gold-in-soil anomalism identified in 2021.
"This allows our technical team to accurately review and confidently plan drilling programs with the aim of identifying further gold mineralisation at depth.
"Follow-up aircore drilling will be undertaken across priority target areas in due course.”
Tenement location.
Auger program
The latest auger drilling campaign comprised a total of 348 drill holes for 535 metres.
There were 331 samples assayed for gold plus 49 other elements at Lab West in Perth using their low-level UltraFine fraction technique that delivers highly sensitive analysis of gold and multi-elements in the ultrafine (<2µm) fraction of soil samples.
The final 17 samples were assayed using Aqua Regia with ICP-MS or ICPOES finish due to the lack of fine fraction material in the samples.
Results of up to 92.7ppb gold were received from the program amongst a background level of 10-15 ppb gold.
Four anomalous areas
This auger program has confirmed that Areas 1, 2 and 3 along with a new area in the north (Area 4) are anomalous in gold:
- Area 1 gold-in-soil confirmed with associated arsenic anomalism;
- Area 2 now 1.4 by 0.7 kilometres with coincidental arsenic anomalism;
- Area 3 confirmed soil-in-soil anomalism but more defuse than the 2021 results; and
- Area 4 towards the north of the tenement package contains 92.7ppb gold.
Assays from the infill auger program along with the original 2021 program have returned strong gold anomalism in several auger holes with grades up to 164ppb supported by multi-element (arsenic, lead and zinc) geochemistry.
The next step at Yarbu is to follow up auger anomalisms with aircore drilling once government approvals are received.
Next for TSC
The following work programs are planned for TSC’s WA and NSW tenement portfolios:
- Yarbu Gold Project - Undertake full review of geochemical sampling from 2021 and 2022 and ascertain the best location for aircore drilling;
- NSW portfolio - Undertake soil and rock chip sampling program over the northern end of
- Perseus, Southern end of Trident and Eastern side of Midas;
- Mt Dimer Gold and Silver Project - All options being assessed by TSC; and
- Rover Gold Project: Undertaking review of all results to ascertain what the next steps will be and work closely with RTX on the northern Rover Project area.