Millennial Potash Intersects 220m of Potash Mineralization in Drillhole BA-001-EXT at Its Banio Potash Project in Gabon

Rhea-AI Summary

Millennial Potash (OTCQB:MLPNF) announced significant drilling results from hole BA-001-EXT at its Banio Potash Project in Gabon. The drill hole intersected 112.5m of carnallitite seams averaging 15.9% KCl (using a 13% cut-off grade) within a broader 220m of potash mineralization.

The results show over 50% thicker cumulative potash seams compared to previous drilling, with six potash Cycles spanning approximately 112m. This significantly exceeds the approximately 70m thick Cumulative zone delineated in previous holes BA-002-EXT and BA-003. The mineralization extends across Cycles II to VII within the Salt Sequence stratigraphy.

These findings could potentially boost the project's existing resources, which currently include an Indicated Resource of 657M tonnes at 15.9% KCl and an Inferred Resource of 1.159B tonnes at 16% KCl. The company plans to update its Mineral Resource Estimate after receiving all pending assay results.

Positive

• Intersected 112.5m of carnallitite seams averaging 15.9% KCl, 50% thicker than previous drilling
• Extended strike length of known potash mineralization to approximately 4km
• Results consistent with existing resource grades (15.9% KCl)
• Strong continuity of potash horizons demonstrated across multiple drill holes
• Potential to significantly increase current resource estimates

Negative

• Core samples from hole BA-004 still pending analysis
• True thickness of mineralization yet to be determined

West Vancouver, British Columbia--(Newsfile Corp. - September 16, 2025) - Millennial Potash Corp. (TSXV: MLP) (OTCQB: MLPNF) (FSE: X0D) ("MLP", "Millennial" or the "Company") is pleased to announce that it has received analytical results for drillhole BA-001-EXT at its Banio Potash Project in Gabon. Hole BA-001-EXT intersected approximately 112.5m cumulative metres of carnallitite seams averaging 15.9% KCl, using a 13% cut-off grade, within the overall 220m of potash mineralization. The 112.5m of carnallitite seams are situated within evaporite Cycles II to Cycle VII which are hosted by the Salt Sequence stratigraphy at the project. This cumulative thickness of 112.5m compares very favourably with the +70m cumulative thicknesses encountered in drillholes BA-002-EXT and BA-003.

Farhad Abasov, Millennial's Chair, commented, "Millennial is excited to announce the assay results for hole BA-001-EXT, which showed over 50% thicker cumulative potash seams than what we drilled last year. It is great to see a Cumulative zone of 6 potash Cycles approximately 112m thick with an average grade of 15.9% KCl. This is significantly thicker than the approximately 70m thick Cumulative zone of Cycles delineated in holes BA-002-EXT and BA-003 as reported in 2024 and demonstrates strong continuity of the potash horizons. The extensive potash mineralization in BA-001-EXT exceeded MLP's expectations and supports the Company's expectation of the Banio Potash Project's further potential. We are looking forward to receiving analytical results from hole BA-004 core samples. The prominent potash mineralization intersected in BA-001-EXT has the potential to significantly boost the project's potash resources. We intend to update our Mineral Resource Estimate after all the assay results are received."

Drillhole BA-001 is located in the centre of the North Target (see Fig. 1) and was originally drilled in 2017 to a depth of 364m where tachyhydrite and carnallitite were intersected but with variable bedding orientations which were originally interpreted as representing a fault zone and the drilling was stopped. MLP's geological model, based on extensive experience in the Gabon-Congo Basin, recognized this variability in bedding as soft-sediment deformation and confined only to single evaporite cycles along drill holes. Drillhole BA-001-EXT represents the extension of BA-001 to 678m and 4 more evaporite cycles with carnallitite seams from approximately 362m to a depth of 657m are present.

Figure 1 Drillhole location map, Banio Potash project

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Two hundred and twenty-six (226) core samples from BA-001-EXT were submitted to the Saskatchewan Research Council (SRC) laboratories for potash analysis. Interpretation of the geology and distribution of mineralization by the Millennial team and our potash consultants, ERCOSPLAN Ingenieurgesellschaft Geotechnik und Bergbau mbH ("ERCOSPLAN"), defines six Evaporite Cycles (Cycle II to Cycle VII) in BA-001-EXT which correlate and confirm the continuity of these same Cycles which were intersected in drillholes BA-002 and BA-003. The Cumulative Total of potash mineralization, primarily interbedded carnallitite and halite, totals 220.25m averaging 10.4 % KCl with no grade cut-off applied (see Table 1)

Table 1 Potash Cycles with Carnallitite Seams intersected with no cut-off grade applied

Evaporite Cycle	Carnallitite Seams	From (m)	To (m)	Thickness (m)*	KCl (%)
Cycle VII	C1 to C7	362.40	518.10	155.70	9.51
Cycle VI	C1 to C2	565.35	607.50	42.15	14.28
Cycle V	C1 to C4	617.50	633.80	16.30	14.84
Cycle IV	C1	645.95	648.60	2.65	18.15
Cycle III	C1	652.95	656.40	3.45	17.21
Cumulative	Total			220.25	10.4

 

*Drilled thickness; true thickness to be determined

Application of a 13% KCl cut-off grade to the seam intersection data yielded a Cumulative Total seam thickness of approximately 112.46m and an average grade of 15.9% KCl (see Table 2). This cumulative total exceeded management's expectations as similar Cycles and seams in BA-002-EXT and BA-003 totalled approximately 70m and the average grade of 15.9% KCl is consistent with the MRE completed in 2024 (see MLP Jan. 16, 2024, Press Release).

Table 2 Potash Cycles with Carnallite Seams intersected with 13% KCl cut-off grade

Evaporite Cycle	Carnallitite Seams	From (m)	To (m)	Thickness (m)*	KCl (%)
Cycle VII	C7	362.40	372.55	10.15	13.75
	C6	no reasonable thickness with grade over 13 % KCl
	C5	454.75	461.54	6.79	15.86
	C4	469.00	475.25	6.25	15.40
	C3	477.20	484.10	6.90	16.63
	C2	490.00	510.45	20.45	19.11
	C1	513.80	518.10	4.30	20.82
Cumulative Total-Cycle VII				54.69	17.16
Cycle VI	C2	565.35	589.75	24.40	14.19
	C1	592.50	607.50	15.00	14.43
Cumulative Total-Cycle VI				39.40	14.30
Cycle V	C4	617.50	623.72	6.22	13.19
	C3	624.80	626.00	1.20	19.15
	C2	627.45	628.30	0.85	20.10
	C1	629.80	633.80	4.00	14.98
Cumulative Total-Cycle V				12.27	14.84
Cycle IV	C1	645.95	648.60	2.65	18.15
Cumulative Total-Cycle IV		645.95	648.60	2.65	18.15
Cycle III	C1	652.95	656.40	3.45	17.21
Cumulative Total-Cycle III		652.95	656.40	3.45	17.21
Cumulative Total		13% cut-off		112.46	15.92

 

* Drilled thickness; true thickness to be determined

The significant thicknesses of Cycles VII, VI, and V, 54.90m and 39.4m and 12.27m respectively, are consistent with the same Cycles encountered in drillholes BA-002 and BA-003 some 4km and 1.5km to the northeast and east of BA-001-EXT. The increased thickness of Cycle VII is likely due to the soft-sediment deformation during precipitation of the salt minerals that has resulted in local thickening of the potash beds (see Fig. 1). This continuity suggests strong potential for BA-001-EXT to add to the existing resource calculated for the project as the 2024 Mineral Resource Estimate ("MRE") did not include any resource associated with BA-001-EXT as the hole was incomplete (see MLP Jan. 16, 2024, Press Release).

The objectives of drilling BA-001-EXT, and the overall Phase 2 program, which includes BA-004, were to evaluate the presence of potash-rich horizons at depth and laterally to provide additional data for a future updated MRE. Identification of additional potash Cycles and seams outlined in BA-001-EXT has extended the strike length of known potash mineralization to approximately 4km which could potentially add significant tonnage to the existing resource calculated for the project which currently contains an Indicated MRE of 657M tonnes grading 15.9% KCl and an Inferred MRE of 1.159B tonnes grading 16% KCl (see MLP Jan. 16, 2024, Press Release). In addition, based on preliminary logging of hole BA-004 where numerous potash Cycles and seams have been identified (see MLP June 26, 2025 Press Release), this strike length could increase to approximately 8km. Analytical results from the SRC laboratory for BA-004 core sampling are pending. In tandem with the potential resource increase, data from the Phase 2 drill program may allow upgrading of some resources from Indicated to Measured status and may possibly result in shifting Inferred tonnage to Indicated status. Samples from the recent drillholes have been selected for dissolution test-work and geotechnical test-work which will be incorporated in any future Feasibility Study.

QA/QC

Millennial employees follow standard operating and quality assurance procedures intended to ensure that all sampling techniques and sample results meet international reporting standards. Procedures for handling core samples begin with securing the potash-bearing PQ-HQ-sized core at the drill site in plastic poly-tubing which is then thermally sealed. Core is placed in rigid core boxes and transported to Millennial's camp for geological logging, detailed geotechnical logging, and photographing. Significant intervals are dry cut in half for HQ core or quartered for PQ core, using a specially modified tungsten carbide bladed core saw. Half (HQ size) and quarter core (PQ size) samples are then double bagged and thermally sealed prior to transporting to Libreville by Millennial personnel. The remaining core is re-sealed in plastic poly-tubing and the core boxes secured at Millennial's exploration camp in air-conditioned containers to prevent deterioration of the potash minerals. Upon arrival in Libreville core samples are stored at Millennial's storage facility and then taken to the Gabon Ministry of Mines & Energy where permission is obtained to export the samples. The bagged samples are then carefully packed into wooden crates and shipped via DHL to the Saskatchewan Research Council (SRC) laboratory in Saskatoon. This sampling procedure was initiated by ERCOSPLAN Ingenieurgesellschaft Geotechnik und Bergbau mbH, Millennial's potash consulting firm, supervised by Millennial's Chief Executive Officer Jason Wilkinson, M.Sc., Sebastiaan van der Klauw, EurGeol from ERCOSPLAN, and periodically reviewed by Millennial Director, Peter J. MacLean, Ph.D., P. Geo.

Millennial is utilizing SRC's Potash ICP Analysis package designed for multi-element analysis of potash samples. Upon arrival at SRC Geoanalytical Laboratories, core samples are dried, and jaw crushed to 95% @ -2mm and 100 g sub sample is split out using a riffler and transferred to vials. The subsample is pulverized to 95 % @ -106 microns using a puck and ring grinding mill to create a pulp. The grinding mills are cleaned between groups using Quintus quartz. The pulp is then transferred to a labelled plastic snap top vial. An aliquot of pulp is placed in a test-tube with 15 ml of 30°C DI water. The sample is shaken. The soluble solution is then analyzed by ICP-OES. The method is suitable for the soluble analysis of commercial potash (Sylvite and Carnallite). The samples are analysed for FeO (wt%), K₂O, Na₂O, MgO, and CaO and a suite of trace elements. Br and Cl are determined using ICP-Ms and a gravimetric determination of the insoluble content for each sample is made. SRC's internal protocol includes the insertion of internal standards and repeats, and review of this data shows no significant deviation from the accepted values. SRC Geoanalytical Laboratories has been certified by the Standards Council of Canada (SCC) to conform to the requirements of ISO/IEC 17025:2005 (CAN-P-4E).

The information in this news release has been reviewed and approved by Sebastiaan van der Klauw, EurGeol of ERCOSPLAN and Peter J. MacLean, Ph.D., P. Geo, Director of the Company, both of whom are Qualified Persons as that term is defined in National Instrument 43-101.

To find out more about Millennial Potash Corp. please contact Investor Relations at (604) 662 8184 or email at info@millennialpotash.com.

Keep up-to-date on Millennial Potash developments and join our online communities on: Twitter, Facebook, LinkedIn, Instagram and YouTube.

MILLENNIAL POTASH CORP.

"Farhad Abasov"
Chair of the Board of Directors

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This document may contain certain "Forward-Looking Statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws. When used in this news release, the words "anticipate", "believe", "estimate", "expect", "potential", "target, "plan" or "planned", "forecast", "intend", "may", "schedule" and similar words or expressions identify forward-looking statements or information. These forward-looking statements or information may relate to future prices of commodities, accuracy of mineral or resource exploration activity, reserves or resources, regulatory or government requirements or approvals including approvals of title and mining rights or licenses and environmental (including land or water use), local community or indigenous community approvals, the reliability of third party information, continued access to mineral properties or infrastructure, changes in laws, rules and regulations in Gabon or any other jurisdiction which may impact upon the Company or its properties or the commercial exploitation of those properties, currency risks including the exchange rate of USD$ for Cdn$ or CFA or other currencies, fluctuations in the market for potash or potash related products, changes in exploration costs and government royalties, export policies or taxes in Gabon or any other jurisdiction and other factors or information. The Company's current plans, expectations and intentions with respect to development of its business and of the Banio Potash Project may be impacted by economic uncertainties arising out of any pandemic or by the impact of current financial and other market conditions on its ability to secure further financing or funding of the Banio Potash Project. Such statements represent the Company's current views with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by the Company, are inherently subject to significant business, economic, competitive, political, environmental and social risks, contingencies and uncertainties. Many factors, both known and unknown, could cause results, performance or achievements to be materially different from the results, performance or achievements that are or may be expressed or implied by such forward-looking statements. The Company does not intend, and does not assume any obligation, to update these forward-looking statements or information to reflect changes in assumptions or changes in circumstances or any other events affecting such statements and information other than as required by applicable laws, rules and regulations.

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FAQ

What were the key findings from MLPNF's BA-001-EXT drill hole at Banio Potash Project?

The drill hole intersected 112.5m of carnallitite seams averaging 15.9% KCl within 220m of potash mineralization, showing 50% thicker seams than previous drilling.

What is the current resource estimate for Millennial Potash's Banio Project?

The project has an Indicated Resource of 657M tonnes at 15.9% KCl and an Inferred Resource of 1.159B tonnes at 16% KCl.

How does BA-001-EXT compare to previous drill holes at the Banio Project?

BA-001-EXT showed 112.5m of cumulative potash seams, significantly exceeding the approximately 70m thick zones found in previous holes BA-002-EXT and BA-003.

What is the strike length of potash mineralization at MLPNF's Banio Project?

The drilling has extended the strike length to approximately 4km, with potential to increase to 8km pending results from hole BA-004.

What are the next steps for Millennial Potash at the Banio Project?

The company plans to update its Mineral Resource Estimate after receiving all pending assay results, including those from hole BA-004.