Stellar AfricaGold Inc. press release

Stellar AfricaGold - Up To 583 Ppb Gold in Soils at Priority Fifty-Five Prospect, Zuenoula, Cote D'ivoire

2026-03-31

TSXV - TSX Venture Exchange · Gold · Silver · Copper · Lead · Zinc · Canada · Drill Results

Stellar AfricaGold - Up To 583 Ppb Gold in Soils at Priority Fifty-Five Prospect, Zuenoula, Cote D'ivoire

(TheNewswire)

Vancouver, BC – TheNewswire - March 31, 2026 Stellar AfricaGold Inc. (“Stellar” or the “Company”) (TSXV: SPX) provides the following update on the exploration progress at the Stellar-MetalsGrove Joint Venture Zuénoula Gold Project, Cote d’Ivoire.

Highlights

• Seven gold prospects now defined by soil sampling at Zuénoula, including previously announced Fifty-Five, Central and South-East Prospects, with one or more >30 ppb Au soil anomalies.

• The Fifty-Five Prospect upgraded to top-priority exploration target, with a peak 583 ppb Au soil anomaly located at the centre of a 3.3 km-long, NE-trending gold anomalous corridor (>20 ppb Au), interpreted to remain open to the northeast

• Central Prospect further strengthened, with a 148 ppb Au soil anomaly confirmed from 400 m × 400 m infill sampling within a broader anomalous area

• Additional prospects, designated as the Eastern, Rouge, Konezra and South-West prospects, defined from wide-spaced 1,000 m × 1,000 m soil sampling, highlighting district-scale prospectivity.

• Infill and extensional soil sampling programs planned at Fifty-Five Prospect, including 200 m × 200 m infill and 400 m × 400 m step-out sampling to the northeast along the interpreted mineralised trend.

• Large-scale infill 400m x 400m soil program (34 km²) planned between Central and Eastern Prospects to follow-up multiple, broad-spaced (1000m x 1000m) gold soil anomalies up to 144 ppb Au and define a potential structural corridor.

• Regolith mapping is nearing completion and LiDAR-orthophoto survey has been extended northwards to cover Fifty-Five Prospect, supporting improved interpretation of gold anomalies.

Stellar-MetalsGrove Joint Venture Zuénoula Gold Project, Cote d’Ivoire.

The Stellar-MetalsGrove Zuénoula Gold Project is a joint venture exploration project between Stellar’s Ivorian subsidiary Aucrest SARL (“Aucrest”) and MetalsGrove Mining Ltd. subsidiary MetalsGrove CDI Pty Ltd (MetalsGrove) to advance Stellar’s 395.78 square kilometer early-stage exploration permit called Zuénoula in Côte d’Ivoire. Pursuant to the joint venture agreement MetalsGrove, the project operator, may earn up to a 50% interest in the Zuénoula Gold Project by incurring US$3,000,000 in exploration expenditures and up to an 80% interest in the Zuénoula Gold Project by incurring a total of US$6,000,000 in exploration expenditures. (For further details of the Stellar-MetalsGrove Joint Venture Agreement see Stellar news release December 9, 2025.)

Stellar Management Commentary

Stellar President and CEO J. François Lalonde commented:

“These results, including the identification of a high-grade 583 ppb gold soil anomaly at the Fifty-Five Prospect within a 3.3 km anomalous trend taken together with the multiple newly defined prospects, represent a significant step forward in advancing the exploration at Zuénoula permit, and highlight the strong district-scale potential of the Zuénoula gold Project.

Significantly, the Fifty-Five anomaly remains open to the northeast, and there is considerable upside potential in extending sampling along this mineralised corridor. With systematic infill and extensional sampling programs now planned, and supported by regolith mapping and LiDAR data, the Stellar-MetalsGrove Joint Venture is well-positioned to rapidly advance these targets towards drill testing.”

Fire Assay Results, Seven Gold Prospects Defined by Soil Sampling

Stellar is pleased to announce is pleased to announce that fire assay gold results received from soil sampling programs completed at Zuénoula permit (PR-750) in Côte d’Ivoire have defined seven gold prospects across the Zuénoula permit area (Figure 1). (see Figure 1 below).

Click Image To View Full Size

Figure 1. Zuénoula soil sampling progress and seven (7) exploration prospects

on aeromagnetic image (RTP)

These seven gold prospects include the previously reported Fifty-Five, Central and South-East Prospects, together with newly identified Eastern, Rouge, Konezra and South-West Prospects, all characterised by one or more +30 ppb Au soil anomalies derived from systematic geochemical soil sampling.

Fifty-Five Prospect

The Fifty-Five Prospect has been elevated to the Company’s highest-priority exploration target following the identification of a peak soil anomaly of 583 ppb Au in 400 m × 400 m infill soil sampling.

The anomaly is located within the centre of a 3.3 km-long, NE-trending gold anomalous corridor (>20 ppb Au), which is interpreted to be structurally controlled and remains open to the northeast.

The scale, coherency and tenor of the gold soil anomaly strongly indicate potential for bedrock-hosted gold mineralisation, consistent with the structurally controlled gold mineralisation found within the Birimian terrane of West Africa.

Central Prospect

At the Central Prospect, located approximately 1 km south of Fifty-Five, a 148 ppb Au soil anomaly has been identified within a broader ~20 km² zone of scattered >20 ppb Au anomalies (Figure 1).

The distribution and scale of anomalism suggest the presence of potentially multiple mineralised sources aligned along a NE-trending structural corridor.

Additional Prospects Defined

Four additional new prospects, designated as the Eastern, Rouge, Konezra and South-West prospects, have been delineated by broad-spaced 1,000 m × 1,000 m soil sampling, each defined by discrete >30 ppb Au soil anomalies.

These results demonstrate the district-scale gold potential of the Zuénoula permit and highlight multiple areas to focus systematic follow-up exploration.

Regolith and LiDAR Programs

To support the interpretation of soil geochemistry, the Company is conducting extensive regolith mapping and flying two LiDAR-orthophoto surveys to develop high-resolution topographic models of priority prospect areas (Figure 2).

Regolith mapping is nearing completion and will define areas of transported versus residual cover, improving confidence in anomaly interpretation

Two high-resolution LiDAR-orthophoto surveys has been flown at the Fifty-Five and Central Prospects, providing detailed topographic data to assist in mapping:

Drainage patterns

Soil transport pathways

Structural features

Areas of outcrop

Artisanal mining activity, if present.

These datasets will play a critical role in refining exploration targets and optimising follow-up exploration programs.

Click Image To View Full Size

Figure 2. Zuénoula regolith mapping and LiDAR-orthophoto areas

Next Phase of Work

The Company is planning a systematic next phase of exploration to advance priority prospects (Figure 3), including: -

Infill soil sampling at Fifty-Five Prospect

200 m × 200 m grid over approximately 12 km²

Extensional sampling at Fifty-Five Prospect

400 m × 400 m grid over approximately 11 km²

Focused to the northeast along the interpreted gold anomalous trend

Infill sampling between Central, Eastern and Konezra Prospects

400 m × 400 m grid over approximately 34 km², designed to test and define mineralised corridor

Completion and integration of regolith mapping

160 km² area already mapped

To identify areas where transported cover may impact the effectiveness of soil geochemistry

Processing and interpretation of LiDAR-orthophoto data

Two areas covering 32 km² to support structural and geomorphological interpretation

Prioritisation of follow-up programs

Across Rouge, South-West and Konezra Prospects

Click Image To View Full Size

Figure 3. Zuénoula planned next phases of soil infill sampling

About the Zuénoula Gold Project

The Stellar-MetalsGrove Zuénoula Gold Project is a joint venture exploration project between Stellar’s Ivorian subsidiary Aucrest SARL (“Aucrest”) and MetalsGrove Mining Ltd. subsidiary MetalsGrove CDI Pty Ltd (MetalsGrove) to advance Stellar’s 395.78 square kilometer early-stage exploration permit in Côte d’Ivoire. The Zuénoula permit is strategically situated along the Abujar–Napié gold trend within the Oumé–Fetekro Birimian greenstone belt in central Côte d’Ivoire, 100km north of the Abujar Gold Mine and 160 km south of the Napié Gold Deposit. (see Figure 4 below)

Click Image To View Full Size

Figure 4. Geology Map of the Stellar-MetalsGrove Zuénoula Gold Project

and Historical Exploration Results1

1 Historical BLEG results sourced from African Gold Limited Annual Report 2023; Historical Auger drilling result sourced from Ricca Resources Limited Financial Report for half year ending 31 December 2021.

Qualified Person

The technical information contained in this release has been reviewed and approved by Mr. Robert Perring, a current member of the Australian Institute of Geoscientists (MAIG) and Exploration Manager of MetalsGrove Mining Limited. Mr. Perring is a Qualified Person under National Instrument 43-101.

About Stellar Africagold Inc.

Stellar AfricaGold Inc. is a Canadian precious metal exploration company focused on precious metals

in North and West Africa, with active programs in Morocco and Côte d’Ivoire. Stellar’s principal exploration projects are its advancing gold discovery at the Tichka Est Gold Project in Morocco, and its

early-stage exploration Zuénoula Gold Project in Côte d’Ivoire which is operated in Joint venture with MetalsGrove Mining Ltd subsidiary, MetalsGrove CDI Pty Ltd.

The Company is listed on the TSX Venture Exchange symbol TSX.V: SPX, the Tradegate Exchange TGAT: 6YP and the Frankfurt Stock Exchange FSX: 6YP.

The Company maintains its head office in Vancouver, BC and has a country office in Marrakech, Morocco.

QA/QC

JORC Code, 2012 Edition – Table 1

Section 1- Sampling Techniques and Data

Criteria

JORC Code Explanation

Commentary

Sampling Techniques

Nature and quality of sampling (e.g. cut channels, random chips, or specific specialied industry standard measurement tools appropriate to the minerals under investigation, such as downhole gamma sondes, or handheld XRF instruments, etc.) These examples should not be taken as limiting the broad meaning of sampling.

Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.

Aspects of the determination ofmineralisation that are Material to the Public Report.

In cases where ‘industry standard’ work has been done, this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases, more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information.

No drilling has been undertaken on Zuenoula PR-750

All soil samples collected on Zuenoula PR-750 have been analysed for gold by fire assay at Bureau Veritas laboratory in Abidjan, Côte d’Ivoire.

SOIL SAMPLING STAGES

Stage 1: Initial, permit-wide, broad-spaced soil sampling on 1000m x 1000m grid

Stage 2: Gold anomalous clusters and trends defined by multiple anomalous soil samples (+20ppb Au) are then infilled with soil samples collected on 400m x 400m grid

Stage 3: Coherent gold soil anomalies are then infilled with soil samples collected on 200m x 200m grid

Stage 4: Higher-density soil sampling (100m x 50m), augering and/or trenching are options that are considered for the next phase of infill sampling depending upon the coherency and areal distribution of the gold anomalous soil samples

Stage 5: Aircore drill testing of coherent gold soil anomalies.

SOIL SAMPLING PROCEDURES

MGA has contracted the experienced consulting group SEMS Exploration Services (SEMS) to conduct all soil sampling

Up to four sampling crews may be active at any one time

The MGA Exploration Manager was onsite at the start of the field program to instruct the sampling crew on the Standard Sampling Procedure required by MGA

MGA provided SEMS Exploration Services with an Excel table listing the designated sample point locations using WGS-84 UTM zone 29N coordinates

Each soil sample is collected from within 20 metres of the designated sample point, with the actual sample point then recorded

At each sample point: 1) the organic rich soil is brushed away, 2) a 40cm deep hole dug and the sample collected by taking a channel-cut along the bottom 20cm of the hole, 3) 1000g of the minus 2mm sieved fraction of each sample is collected from the sample point, 4) gold is determined by fire assay (LDL 2ppb)

Duplicate samples are collected every 20th sample, certified reference material (CRM) inserted every 20th sample, and blanks inserted every 20th sample.

Samples are stored at the secure SEMS field compound in Zuénoula prior to transport to Bureau Veritas in Abidjan of gold analysis.

Drilling Techniques

Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc.) and details (e.g. corediameter,tripleorstandard tube,depthofdiamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc).

No drilling has been undertaken.

Drill Sample Recovery

Method of recording and assessing core and chip sample recoveries and results assessed.

Measures taken to maximise sample recovery and ensure representative nature of the samples.

Whether a relationship exists between sample recovery and grade,andwhether samplebias may have occurred due to preferential loss/gain of fine/coarsematerial.

No drilling has been undertaken.

Logging

Whether core and chip samples have been geologically and geotechnicallyloggedtolevel of detail to support appropriate Mineral Resource estimation, miningstudiesandmetallurgical studies.

Whether loggingisqualitativeor quantitative in nature. Core (or costean, channel, etc.) photography.

Thetotallengthandpercentage oftherelevantintersections logged.

No drilling has been undertaken

Soil samples are comprehensively logged for a range of parameters including colour, soil horizon, sample weight, slope, dominant grain size (clay, silt, sand), general topography, residual or transported, proximity to artisanal workings, other ground disturbances such as field plowing, and general land use (grassland, plantation, crop, etc.).

Sub-sampling Techniques and Sample Preparation

Ifcore,whethercutorsawnand whether quarter, half or all core taken.

Ifnon-core,whetherriffled,tube sampled, rotary split, etc. and whether sampled wet or dry.

For all sample types, the nature, quality and appropriateness of the sample preparation technique.

Quality control procedures adopted for all sub-sampling stagestomaximise representivity of samples.

Measures taken to ensure that thesamplingisrepresentativeof the in-situ material collected, including, for instance, results for field duplicate/second-half sampling.

Whethersample sizes are appropriate to the grain size of the material being sampled.

No drilling has been undertaken

No sub-sampling of the 1000g soil samples is undertaken prior to the sample arriving at Bureau Veritas laboratory

At Bureau Veritas, the entire 1000g sample is pulped prior to the laboratory taking a 50g split for lead collection fire assay determination of gold concentration.

Quality of Assay Data and Laboratory Tests

The nature, quality and appropriateness of the assaying andlaboratoryproceduresused and whether the technique is considered partial or total.

Forgeophysical tools, spectrometers, handheld XRF instruments,etc.,theparameters used in determining the analysis, including instrument make and model, reading times, calibrationfactorsapplied,and

their derivation, etc.

Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, externallaboratorychecks)and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established.

Bureau Veritas is an internationally accredited assay laboratory located in Abidjan, Cote d’Ivoire.

Assay results for all samples presented in the announcement were determined by fire assay (Lab Code: FE450, LDL 2ppb), which is a total gold extraction method for analysis.

The lower detection limit (LDL) of 2ppb is considered appropriate for greenfields, early stage, exploration soil sampling

Fire assay gold is considered one of the most reliable assay techniques for gold analyses.

Verification of Sampling and Assaying

The verification of significant intersections by either independent or alternative company personnel.

Theuseoftwinnedholes.

Documentationofprimarydata, data entry procedures, data verification, data storage (physical and electronic) protocols.

Discussanyadjustmentstoassay data.

FIRE ASSAY ANALYSIS

All samples have been analysed for gold by fire assay at Bureau Veritas laboratory in Abidjan, Cote d’Ivoire

The 1000g -2mm sample collected in the field is analysed for gold by fire assay (Lab Code: FE450, LDL 2ppb)

At the laboratory, the 1000g -2mm sample is dried and pulverised to 85% passing 75 microns.

This sample pulp is then mixed with a combination of chemical reagents, which when heated to high temperatures results in the formation of a lead button and slag. The lead button that contains the precious metals (including gold) is cupelled at high temperature. The lead is adsorbed by the cupel leaving behind a bead that contains the precious metals.

The bead is acid digested and analysed by AAS, with a lower detection limit of 2ppb Au

Location of Data Points

Accuracy and qualityof surveys used to locate drillholes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation.

Specification of the grid system used.

Quality and adequacy of topographic control.

A handheld GPS is used to locate the soil data positions, with a +/-5m vertical and horizontal accuracy

Sample locations (UTM WGS-84 zone 29N) and sample descriptions are noted on a standard form in the field and entered on a computer of an evening

GPS measurements of sample positions are sufficiently accurate for exploration targeting gold systems.

Data Spacing and Distribution

Data spacing for reporting Exploration Results.

Whether the data spacing and distribution is sufficient to establish the degree of geologicalandgradecontinuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied.

Whethersamplecompositing hasbeenapplied.

An 1000m by 1000m offset grid pattern has been adopted for the entire project area, excluding areas of irrigated sugar cane and villages.

Broad-spaced soil sampling (1000m by 1000m) and low level gold fire assay analysis (LDL 2ppb) is considered an effective technique for identifying and delimiting gold anomalous clusters and trends, which are then followed up with higher density sampling at 400m 400m, 200m x 200m, and in some areas 100m x 50m, as the next phases of sampling ahead of trenching, augering, and drill testing of coherent gold soil anomalies.

Orientation of data in relation to geological al structure

Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type.

If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material.

The sample location configuration has been deliberately planned to avoid directional bias.

Sample security

The measures taken to ensure sample security.

1000g of the -2mm sieved fraction of soil samples are collected in plastic bags, assigned individual sample numbers and transported to the secure SEMS compound in Zuénoula

Samples have been analysed by fire assay at Bureau Veritas in Côte d’Ivoire and were personally transported to the laboratory by a senior member of the MetalsGrove Abidjan-based exploration team.

Audits or Reviews

The results of any audits or reviews of sampling techniques and data.

The sampling and assay techniques adopted by MetalsGrove has been effectively used in the Vavoua-Kounahiri district, and more widely in Cte d’Ivoire, to define drill targets and it is considered an effective initial approach for defining gold anomalous lithogeochemical trends.