Dalaroo Metals Ltd (ASX: DAL) has outlined new and significant BHT/SEDEX-style Pb-Zn-Ag mineralisation in its recently completed AC drilling programme at the Browns prospect in Western Australia.
Browns is one of six Pb-Zn soil geochemical prospects identified from large systematic soil geochemical programmes (sample spacing 250 X 50-100m) at Lyons River within a Proterozoic Age basin setting covering an area of 30 km by 10 km.
Lyons River comprises a strategic (100% owned) land position of 703 sq. km within the Paleoproterozoic Mutherbukin Zone of the Gascoyne Province.
Significant Pb-Zn sulphide intercepts include: 16m @ 0.72% Pb, 0.35% Zn and 2g/t silver (Ag) from 32m including 8m @ 1.1% Pb and 2.50 g/t Ag from 36m, and 28m @ 0.41 % Pb, 0.20% Zn from surface including 8m @ 0.75% Pb, 0.20% Zn and 1.25g/t Ag from 16m.
The significant Pb-Zn AC results from Browns further confirm that Lyons River has potential to host multiple Pb-Zn discoveries and is emerging as a new Broken Hill Type (BHT) / Sedimentary Exhalative (SEDEX) deposit setting in Western Australia.
“We are encouraged by the prospectivity of discovering a significant BHT-SEDEX-style deposit at Browns and by the evidence that lead-zinc-silver mineralising fluids have circulated at the basin-wide scale five kilometres east from our already drilled Four Corners prospect,” Managing Director, Harjinder Kehal, said.
“This means extensive hydrothermal fluid circulation cells are present which are important for developing ore forming fluids. This in turn leads us to the conclusion there may be multiple base metal deposits at our Lyons River Project. We are looking forward to testing this in the December quarter 2022 by conducting more drilling in conjunction with downhole geophysical surveys.”
A total of 20 angled AC drill holes for 1,216 metres ranging in depth from 49 to 73 metres were completed. The AC drill programme was designed to test a very compelling broad Pb-Zn soil and rock chip geochemical anomaly (max 1445ppm Pb, 1080 Zn ppm) covering an area of 2km X 1km, associated with extensive iron-rich and gossanous material at surface.
Detailed gravity surveys (200m X 50m spacing), completed by the company in the second half of 2021, complemented historical surveys by BHP and show a coincident gravity low suggesting an area of possible deepening basin development at Browns. T
he northern part of the Browns coincident Pb and Zn soil geochemical anomaly appears to lie at the intersection of two NW-SE striking parallel features identified within the magnetics/gravity data that are interpreted as thrust structures.
The AC drill programme has only tested the northern part of the 2km X 1km Pb-Zn soil/rock chip anomaly. Ag intercepts are coincident with Pb and Zn assays and further support the presence of BHT/SEDEX-style of mineralisation.
For further information please visit: https://www.dalaroometals.com.au/
