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Bryah Resources Limited (ASX: BYH, “the Company” or “Bryah”) is pleased to announce promising rock chip results from its wholly owned Lake Johnston Project, prospective for lithium and nickel. These results are a product of reconnaissance sampling and mapping completed in July 2023.
HIGHLIGHTS
- Rock chip results highly anomalous in suite of elements characteristic of Lithium- caesium-tantalum (LCT) pegmatites, alongside indicator mineralogy and mineral texture.
- Roundbottom prospect pegmatites in area of generally poor bedrock exposure:
- LJRK002 – 403 ppm Li2O, 774 ppm Rb, 228 ppm Nb, 18.2 ppm Ta, 62.7 ppm Sn, and 9.6 ppm W.
- Several sub-linear, parallel pegmatites identified at the Pegasus prospect dipping under recent alluvial cover with anomalous pathfinder elements.
- LJRK009 – 0.13% Rb, 25.2 ppm Nb, 30.8 ppm Cs, 11.8 ppm Be
- These prospects have historically been overlooked, with no previously reported or mapped pegmatites in these areas.
- New tenement under application
Lake Johnston Exploration – What’s Coming Up?
- Detailed geological mapping over prospect area
- Sample preparation and analysis of soil samples collected during this excursion
- Planning underway for regional auger soil sampling programme
- Delineation of drilling targets
Commenting on the results, Bryah CEO Ashley Jones said: “These initial results from pegmatites outcropping at the Lake Johnston Project are promising and confirm the LCT pegmatite prospectivity of our tenure. These rock chip samples are anomalous in lithium, as well as several other key elements distinctive of LCT pegmatites.
These areas have been historically overlooked, with no previously reported pegmatite outcrops. With additional geological mapping, rock chip sampling, and soil sampling, we have the potential to identify some exciting drill targets.
Our neighbours have so far been very successful, particularly at Charger Metal’s Lake Medcalf Prospect and TG Metals Burmeister Project. This is in addition to the nearby, world-class Mt Holland lithium mine. We are in the right postcode, and these rock chip samples confirm that we are searching in the correct areas.”
The Lake Johnston Project consists of eight granted exploration licenses and one licence under application. Six of these licences, covering 569 km2, are held Bryah Resources, whilst a further three licences are held by West Coast Minerals Pty Ltd. West Coast Minerals’ three exploration licences cover approximately 225km2.
The exploration ground extends to within 10 kilometres east of the world class Mount Holland Lithium mine and concentrator being developed under the Wesfarmers Limited/SQM Australia Pty Ltd joint venture. The Mount Holland Lithium project includes the Earl Grey Lithium deposit with a reported Mineral Resource1 of 189 million tonnes grading 1.5% Li2O, making it a globally significant high-grade hard rock lithium deposit.
Figure 1 Geological map of the Lake Johnston area showing Bryah Resources live (granted) and pending tenement holdings. Rock chip samples collected during this trip are shown in white.
Pegasus Prospect
The Pegasus prospect (Figure 2) is an area of mixed colluvium and aeolian sands with very poor outcrop. Bedrock geology is interpreted to consist of amphibolite, Banded Iron Formation (BIF) and olivine komatiite within a sliver of the Younami Terrane greenstone unit east of Lake Johnston. The area has previously been evaluated for komatiite-hosted nickel, analogous to the nearby Maggie- Hays and Emily-Anne deposits.
At the Pegasus prospect, several outcropping pegmatites were observed at the southern end of the tenement striking ~north-west before dipping under cover, hosted in a sheared amphibolite. These coarse to very coarse pegmatites contain key indicator minerals (garnet and tourmaline) as well as mineral growth textures (graphic quartz-feldspar texture) characteristic of LCT pegmatite deposits.
Despite no direct detection of anomalous lithium, the exceptionally anomalous Rb and subsequent low K/Rb ratio, as well as anomalism in Nb, Cs and Be, is encouraging. These anomalous pegmatites are not widely exposed in the area and no clear pegmatite zoning is therefore observed. Further work is required to resolve the true thickness of pegmatites and define lithium-rich zones.
Figure 2 Overview of the Pegasus prospect with rock chip samples coloured to Rb content. Soil sample locations are shown, but currently un-assayed.
Figure 3 Outcropping very coarse pegmatite adjacent to soil sample LJSS009 with distinctive graphic quartz-feldspar texture.
Roundbottom Prospect
The Roundbottom Prospect (Figure 4), located ~3km north of Roundtop Hill, is characterised by expansive sheetwash material with very rare outcropping amphibolite. The bedrock geology is inferred to consist of Youanmi Greenstone Terrane amphibolites and komatiites folded around an Archaean granite contact.
Among the limited outcrop, two localities included some pegmatoidal rocks with a quartz- muscovite-feldspar-garnet mineralogy. Some trace tourmaline was also observed in the LJRK002 pegmatite.
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BYH:AU
Drilling Commenced at Viani in Fiji
HIGHLIGHTS
- The Phase 1, three-hole diamond drilling program has commenced at the Viani Project, Fiji and will test for extensions to the quartz vein gold mineralisation at depth.
- Phase 1 is expected to be completed in early 2025, with plans for additional drilling under the same program dependent on the initial results
- The Viani Project (SPL1513) covers an area of approximately 200km2 and is largely underexplored.
- At the Dakuniba prospect within Viani, low sulphidation epithermal high-grade gold mineralisation has been mapped over >3km strike length.
- Diamond drilling completed by Japan International Cooperation Agency (JICA) in 1995 to 1997 intersected high-grade gold in low sulphidation epithermal quartz veins, including 0.6m @ 27.6 g/t Au.
Alice Queen’s Managing Director, Andrew Buxton said,
With drilling underway, Alice Queen is positioned to test the epithermal gold-style mineralisation identified in historic drilling at the Viani Project. Weather permitting, we anticipate completing the Phase 1, three-hole diamond drilling program in early 2025. Following this, our exploration team will mobilise the drill rig to the Sabeto Project in Fiji to maintain the momentum of this campaign. To deliver timely results to shareholders, we intend to accelerate the analysis of the drill core at ALS Brisbane.”
Image 1 – Diamond drilling at Viani
Details
Geology
The geology of the Viani Project (SPL 1513) comprises olivine basalts and volcaniclastics of the Natewa Volcanic Group which are intruded by andesite sills and dykes. In the 1940s, gold mineralisation was found by local prospectors near the village of Dakuniba. At Dakuniba, low sulphidation style epithermal gold occurs in quartz veins, and silicified rocks along a 3km long NE trending zone.
In 1995-1997, Japan International Cooperation Agency (JICA) drilled six diamond holes at Dakuniba and intersected high-grade gold in chalcedonic, crustiform, colloform banded quartz veins at depths of 50m to 100m below surface (i.e. MJVFV-5 intersected 2.2m @ 11.3 g/t Au, incl 0.6m @ 27.6 g/t Au at 121m downhole). This high-grade gold mineralisation is open in all directions.
Proposed Drill program
The initial Phase 1 drill program at Viani (see Table 1) will comprise three diamond drillholes designed to test continuity to the epithermal gold mineralisation previously intersected in JICA drillhole MJVFV- 5 (2.2m @ 11.3 g/t Au) (see Figure 2). The drilling will test for extensions to the gold mineralisation at depth and along strike.
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This article includes content from Alice Queen Limited, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Maiden Drill Program Set to Commence at the High-Priority Cangallo Porphry Copper Project
- Maiden RC drill program to commence at Cangallo in mid-December
- Program will test a large-scale, undrilled porphyry copper target
- Assay results expected around the end of January 2025
- Permitting underway for drill programs across other high-priority, large-scale porphyry copper targets at Lantana and Playa Kali
Access and drill pad preparations have commenced with drilling scheduled to start around mid-December. The planned program, which comprises a minimum of eight drill-holes for a total of ~2,500m, will take 3 to 4 weeks to complete with assay results expected around the end of January 2025.
Figure 1: Cangallo Porphyry Copper Prospect showing copper and molybdenum values and permitted drill sites.
Geological mapping and rock-chip sampling has outlined a partially exposed potential copper (+/- gold) porphyry system, within a large-scale (3km x 2km) caldera-like structure containing extensive colluvial and younger sediment cover.
The initial drilling program will test areas containing relatively intense veining (quartz) and porphyritic dykes, where higher copper (up to 0.65% Cu) and gold (up to 0.3g/t Au) values have been found. The possibility of a buried porphyry copper system beneath the extensive cover within the interpreted caldera-like structure will also be tested.
Cangallo is located close to significant infrastructure and is approximately 25km from the town of Chala, and within 10km of the coast.
Commenting on the imminent commencement of drilling at Cangallo, AusQuest’s Managing Director, Graeme Drew, said:
“This is a very exciting time for the Company as we are about to commence the maiden drill program at this high-priority porphyry copper target in Peru which we have been working towards for over 12 months.
Cangallo has never been drilled before and demonstrates classic geochemical and alteration signatures which suggest there is significant potential to discover large-scale copper porphyry mineralisation.
Success at Cangallo has potential to create significant value for our shareholders and we look forward to keeping our shareholders updated as the results become available.”
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This article includes content from AusQuest limited, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
