Avira Resources Ltd (ASX:AVW) Exceptional High-Grade Gold Confirmed at Mt Cattlin

25 March 2026

Price Sensitive Announcement $

Highlights

• Exceptional Grade: High-grade historical gold drilling confirmed at the Mt Cattlin Gold Project. Intersections exceeding 100 g/t Au confirmed at Sirdar, including 1.00m @ 131.24 g/t Au, 6.00m @ 50.07 g/t Au, and 9m @ 23.42 g/t.
• System-Scale Confirmation: Mineralisation confirmed across four prospects — Maori Queen, Sirdar, Plantagenet and Ellendale — with the “New Zealand Trend” extending 650m of strike and remaining open at depth and along strike.
• Exciting Drill targets: RC drill programs have been designed for Maori Queen and Sirdar, with drill-testing of Plantagenet and Ellendale also planned. First drill program targeted for early Q2 2026 on receipt of required approvals and permits.
• Resource Path Defined: Drilling designed to test shallow extensions and support a maiden Mineral Resource Estimate, targeted for Q4 2026

Overview:

Avira Resources Ltd (ASX: AVW) is pleased to report the confirmation of significant high-grade gold intersections at the Mt Cattlin Gold Project in Western Australia, following the completion of an exhaustive database compilation and validation process across all historical drilling. The results substantiate both the extraordinary grade and the meaningful scale of the system, and provide a robust foundation for the Company’s maiden Mineral Resource Estimate program.

Mt Cattlin Gold Project

The Mt Cattlin Gold Project is located in the southern Goldfields-Esperance region of Western Australia, approximately 550 km south-east of Perth and 4 km north of Ravensthorpe. The Project is held under Exploration Licence E74/401, registered in the name of Galaxy Lithium Australia Pty Ltd (a subsidiary of Rio Tinto Lithium), with Avira holding all mineral rights except pegmatite minerals. The Project sits immediately adjacent to the large-scale Mt Cattlin Lithium Mine and encompasses the high-grade Maori Queen and Sirdar gold deposits, which together carry a historical production record of 23,006 tonnes at 24.56 g/t Au, indicating the high-grade potential of the project.

Project-scale geology (Figure 1) is characterised by sheared Archaean mafic and felsic metavolcanic rocks (Annabelle Volcanics) intruded by a significant multiphase porphyry complex (approximately 2.5 km × 1.5 km). This intrusive body and its associated brittle-ductile shear network are interpreted as the primary controls on gold mineralisation, consistent with an intrusive-related gold system (IRGS) or porphyry-affiliated model. Gold mineralisation is interpreted to occur in two principal styles: narrow, high-grade mesothermal shear-hosted quartz-sulphide lodes (pyrite, arsenopyrite); and broader disseminated stockwork mineralisation associated with the porphyry complex.

Reporting of Significant Intercepts

The results reported in this announcement represent a validated historical drilling database.
The validation program comprised: verification of original logging and assay source data; confirmation of collar locations; and review of drilling methods, downhole survey data and assay techniques. All results are derived from fire assay analyses and are reported above a 0.5 g/t Au cut-off grade with a maximum of 2 metres internal dilution. The completion of this process has directly enabled the construction of geological and mineralisation models that now underpin the forthcoming drill programs.

Maori Queen Gold Deposit

Drilling at Maori Queen, comprising 43 RC and diamond holes, has intersected the primary structure in 20 instances, defining a 150-metre strike length and 100-metre down-dip extent that remains open at depth and along strike (Figure 2). The Maori Queen vein trends north-east and dips at 70° to the north-west. Historical mining has depleted the near-surface resource to approximately 30 metres depth, with the bulk of the defined mineralisation below this level presenting a clear target for RC drill testing.

Best Intercepts — Maori Queen

 2.00m @ 31.65 g/t Au from 67.00m (RAGC001)
 2.00m @ 19.46 g/t Au from 24.00m (RR119)
 5.00m @ 6.34 g/t Au from 73.00m (RAGC032)
 6.00m @ 4.87 g/t Au from 74.00m (RAGC052)
 1.00m @ 22.70 g/t Au from 23.00m (RAGC033A)
 5.00m @ 4.43 g/t Au from 19.00m (RR039)

The New Zealand Trend

The Maori Queen mineralisation links with two adjacent prospects — Maori Chief and Maori Prince — along a south-west-trending alignment referred to as the “New Zealand Trend”. This trend extends over 650 metres of strike (Figure 5) and, with further drilling, has the potential to form a single, continuous mineralised corridor. The trend remains open at depth and along strike, with large sections as yet untested.

Best Intercepts — Maori Chief and Maori Prince

 4.00m @ 20.45 g/t Au from 62.00m (RAGC056) — Maori Prince
 4.00m @ 2.35 g/t Au from 21.00m (RAGC054) — Maori Chief
 10.00m @ 0.76 g/t Au from 4.00m (RR069) — Maori Chief

Sirdar Gold Deposit

Sirdar is the project’s most extensively drilled deposit, with 80 RC and diamond holes delineating mineralisation over a 115-metre strike length. Within this envelope, high-grade mineralisation follows a distinct NNW trend and extends down-plunge for over 100 metres within strongly altered and stockwork quartz-veined dolerite. Gentle to moderately east-dipping pegmatite sheets are common throughout, and the current interpreted mineralisation model’s lower boundary truncates against a pegmatite sill estimated at 10–15 metres thickness (Figures 6 and 7). Critically, the deposit remains open below this sill: intercept RAGD038 returned 1.6m @ 19.2 g/t Au approximately 100 metres below it, suggesting the potential for mineralisation to extend beneath the sill, which warrants further drill testing.

Best Intercepts — Sirdar

 6.00m @ 50.07 g/t Au from 20.00m (RR139)
 1.00m @ 131.24 g/t Au from 73.00m (RAGC018)
 9.00m @ 23.42 g/t Au from 33.00m (RR133)
 2.00m @ 48.04 g/t Au from 46.00m (RR139)
 10.00m @ 8.12 g/t Au from 16.00m (RAGD039)
 15.00m @ 5.22 g/t Au from 53.00m (RAGC019)
 10.20m @ 7.35 g/t Au from 44.80m (RAGD039)
 14.00m @ 6.57 g/t Au from 44.00m (SRC005)
 21.00m @ 3.41 g/t Au from 34.00m (RR092)
 25.00m @ 2.83 g/t Au from 49.00m (RAGC006)
 12.00m @ 5.32 g/t Au from 34.00m (SRC002)
 8.00m @ 6.82 g/t Au from 30.00m (RR124)
 1.00m @ 53.60 g/t Au from 74.00m (RAGD039)
 13.00m @ 3.40 g/t Au from 66.00m (RR145)
 12.00m @ 2.99 g/t Au from 36.00m (SRC008)
 5.00m @ 6.50 g/t Au from 55.00m (RR124)

Ellendale Prospect

Located 500 metres north-west of Sirdar, Ellendale has delivered consistent gold intersections over meaningful widths, as shown in Figure 8. Mineralisation remains open and drill spacing is wide, suggesting significant scope for expansion.

Best Intercepts — Ellendale

 10.00m @ 2.70 g/t Au from 77.00m (RAGC073)
 13.00m @ 1.51 g/t Au from 24.00m (RAGC072)
 8.00m @ 1.21 g/t Au from 44.00m (RAGC070)
 4.00m @ 1.18 g/t Au from 54.00m (RAGC075)

Plantagenet Prospect

Situated 600 metres west-south-west of Sirdar, Plantagenet has returned some of the project’s highest-grade surface intercepts. Mineralisation is hosted in narrow quartz-sulphide bearing
structures associated with diorite intrusions (Figure 9). The geometry and extent of these structures remains to be defined, and RC drilling is planned to test extensions down-dip and along strike.

Best Intercepts — Plantagenet

 4.00m @ 18.52 g/t Au from 14.00m (RAGC086)
 3.00m @ 19.98 g/t Au from 62.00m (RAGC084)
 6.00m @ 5.41 g/t Au from 38.00m (RAGC083)
 1.00m @ 10.50 g/t Au from 23.00m (RAGC083)

Next Steps

Avira is advancing all necessary approvals and permits to commence on-ground exploration. Upon grant, the Company intends to pursue its first phase of RC exploration drilling across Maori Queen and Sirdar, designed to define shallow extensions to the known mineralisation and establish the basis for a maiden Mineral Resource Estimate. RC drilling will simultaneously test extensions at Ellendale and Plantagenet, with ongoing geological investigation addressing the project’s broader gold exploration potential.

Targets and Objectives

Q2 2026* — RC drill program commencement at Maori Queen and Sirdar
Q2–Q3 2026* — Drill-testing of Ellendale and Plantagenet extensions
Q3-Q4 2026* — Maiden Mineral Resource Estimate (targeted)

Company Notes:

Executive Director James Robinson commented: “This validation process has done exactly what it was designed to do — give us a clear, reliable picture of what Mt Cattlin holds. The high grades at Sirdar and Maori Queen, and the scale across the New Zealand Trend are genuinely compelling. We have a well-defined drill program, the permits process is underway, and Q4 2026 is a realistic target for our maiden Resource. Mt Cattlin is earning its place as a serious gold project.”

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