Smackover Lithium Files Maiden Inferred Resource for Its Franklin Project in East Texas, Containing the Highest Reported Lithium-in-Brine Grades in North America
Smackover Lithium (TSXV: SLI; NYSE.A: SLI) filed a Maiden Inferred Resource for the Franklin Project in East Texas reporting 2,159,000 tonnes LCE at an average lithium concentration of 668 mg/L, within 0.61 km3 of brine. The report also lists 15,414,000 tonnes of potash (KCl) and 2,638,000 tonnes of bromide. Over 46,000 leased acres support the inferred resource and a historic Pine Forest 1 well measured 806 mg/L, noted as among the highest lithium-in-brine grades in North America.
Next steps include additional appraisal drilling, re-entering three shut-in wells, DLE testing, and work toward a Preliminary Feasibility Study aimed at multi-phase development.
Smackover Lithium (TSXV: SLI; NYSE.A: SLI) ha presentato una Prima Risorsa Inferita per il Progetto Franklin nell'East Texas, riportando 2.159.000 tonnellate di LCE con una concentrazione media di litio di 668 mg/L, all'interno di 0,61 km³ di brodo salino. Il rapporto elenca anche 15.414.000 tonnellate di potassa (KCl) e 2.638.000 tonnellate di bromuro. Oltre 46.000 acri in locazione supportano la risorsa inferita e un pozzo Pine Forest 1 storico ha misurato 806 mg/L, annotato tra i più alti gradi di litio in salamoia in Nord America.
I passi successivi includono ulteriori perforazioni di valutazione, la ri-entrata di tre pozzi chiusi, test DLE e un lavoro verso uno Studio di Fattibilità Preliminare mirato a uno sviluppo in più fasi.
Smackover Lithium (TSXV: SLI; NYSE.A: SLI) presentó un Recurso Inferido Inicial para el Proyecto Franklin en East Texas, reportando 2.159.000 toneladas de LCE con una concentración media de litio de 668 mg/L, dentro de 0,61 km³ de salmuera. El informe también lista 15.414.000 toneladas de potasa (KCl) y 2.638.000 toneladas de bromuro. Más de 46.000 acres arrendados respaldan el recurso inferido y un pozo histórico Pine Forest 1 midió 806 mg/L, señalado como uno de los grados de litio en salmuera más altos de Norteamérica.
Los siguientes pasos incluyen perforación adicional de reconocimiento, reentrada de tres pozos cerrados, pruebas DLE y trabajo hacia un Estudio de Factibilidad Preliminar orientado a un desarrollo en múltiples fases.
Smackover Lithium (TSXV: SLI; NYSE.A: SLI)는 프랭클린 프로젝트(일리노이 주 East Texas)에 대해 추정 자원(추정 가능량) 최초로 보고서를 제출했으며, 2,159,000톤 LCE를 평균 리튬 농도 668 mg/L로, 0.61 km³의 브라인(brine) 안에 포함된 것으로 보고했습니다. 보고서에는 또한 15,414,000톤의 포타샤(KCl) 및 2,638,000톤의 브로미드도 기재되어 있습니다. 46,000에이커가 임대로 확보되어 추정 자원을 뒷받침하고, 역사적 Pine Forest 1 우물은 806 mg/L를 측정했으며 북미에서 가장 높은 브라인 내 리튬 등급 중 하나로 언급되었습니다.
다음 단계로는 추가 평가용 시추, 셧인된 세 개의 우물 재진입, DLE 테스트 및 다단계 개발을 목표로 한 예비 타당성 연구(PFS) 작업이 포함됩니다.
Smackover Lithium (TSXV: SLI; NYSE.A: SLI) a présenté une ressource inférée initiale pour le projet Franklin dans l'Est du Texas, avec 2 159 000 tonnes de LCE à une concentration moyenne de lithium de 668 mg/L, dans 0,61 km³ de saumure. Le rapport indique également 15 414 000 tonnes de potasse (KCl) et 2 638 000 tonnes de bromure. Plus de 46 000 acres loués soutiennent la ressource inférée et un puits Pine Forest 1 historique a mesuré 806 mg/L, considéré comme l'un des grades de lithium en saumure les plus élevés en Amérique du Nord.
Les étapes suivantes comprennent des forages d'évaluation supplémentaires, la réentrée de trois puits fermés, des tests DLE et des travaux en vue d'une Étude de faisabilité préliminaire visant un développement en plusieurs phases.
Smackover Lithium (TSXV: SLI; NYSE.A: SLI) hat eine erste inferierte Ressource für das Franklin-Projekt in East Texas gemeldet und 2.159.000 Tonnen LCE bei einer durchschnittlichen Lithiumkonzentration von 668 mg/L innerhalb von 0,61 km³ Salzwasser angegeben. Der Bericht listet außerdem 15.414.000 Tonnen Kali (KCl) und 2.638.000 Tonnen Bromid auf. Über 46.000 gepachtete Morgen Akten unterstützen die inferierte Ressource, und ein historischer Pine Forest 1-Bohrloch maß 806 mg/L, was zu den höchsten Lithium-Werten in Salzwasser in Nordamerika gehört.
Zu den nächsten Schritten gehören zusätzliche Erkundungsbohrungen, die Wiedereinführung von drei zugefrorenen Bohrlöchern, DLE-Tests und Arbeiten an einer vorläufigen Machbarkeitsstudie, die auf eine mehrphasige Entwicklung abzielt.
Smackover Lithium (TSXV: SLI; NYSE.A: SLI) قد قدمت مورداً افتراضياً أولياً لمشروع فرانكلين في شرق تكساس، معلنة 2,159,000 طن من LCE بتركيز لايتر عالي بمتوسط 668 mg/L، ضمن 0.61 كم³ من المحلول الملحي. كما يسرد التقرير 15,414,000 طن من البوتاسيك (KCl) و2,638,000 طن من البروميد. تدعم أكثر من 46,000 فدان مستأجرة الموارد المفترضة، كما أن بئراً Pine Forest 1 التاريخي قد قاس 806 mg/L، بكونه من بين أعلى مستويات الليثيوم في المحلول الملحي في أمريكا الشمالية.
تشمل الخطوات التالية مزيداً من حفر التقييم، وإعادة دخول ثلاثة آبار مغلقة، واختبارات DLE، والعمل نحو دراسة جدوى مبدئية تهدف إلى تطوير متعدد المراحل.
- Maiden inferred resource of 2,159,000 tonnes LCE
- Average lithium concentration of 668 mg/L
- 15,414,000 tonnes of potash (KCl) identified
- 46,000+ acres leased supporting the resource
- Resource classification is Inferred, indicating high geological uncertainty
- No proven or probable reserves; further drilling and testing required
- Planned DLE and feasibility work needed before production can be confirmed
Insights
Maiden inferred resource with very high lithium grades supports project scale-up but requires appraisal and DLE validation.
Smackover Lithium reports a maiden Inferred Resource of 2,159,000 tonnes LCE at an average lithium concentration of 668 mg/L, plus notable potash and bromide volumes, contained within 0.61 km3 of brine. The reported peak grade of 806 mg/L at Pine Forest 1 underpins the claim of the highest lithium-in-brine grades in North America and materially defines the Project’s technical upside.
The business mechanism is simple: resource scale and grade increase the technical case for a multi‑phase lithium chemicals operation in East Texas, targeting >100,000 tonnes/year eventual production. Key dependencies remain: upgrading Inferred Resources to Measured/Indicated and Proven/Probable Reserves through additional drilling, reservoir characterisation, and successful direct lithium extraction (DLE) testing. The company plans appraisal drilling, re-entry of three shut-in wells, and DLE work tied to learnings from the Demonstration Plant in El Dorado.
Watch items and timing: completion and findings of additional appraisal wells and reservoir studies, DLE test results that demonstrate recoveries and reagent/operational metrics, and any Preliminary Feasibility Study milestones expected following the next round of work; these near-term items will determine whether the maiden resource can translate into reserves and project economics. The Report filing on
LEWISVILLE, Ark., Nov. 05, 2025 (GLOBE NEWSWIRE) -- Smackover Lithium, a 55:45 owned Joint Venture (“JV”) between Standard Lithium Ltd. (“Standard Lithium” or the “Company”) (TSXV: SLI) (NYSE.A: SLI) and Equinor (“Equinor”), announced today that it has filed its Maiden Inferred Resource report (the “Report”) for the Franklin Project (the “Project”) in the northeast region of Texas.
All terms not otherwise defined have the meaning given to them under the CIM Definition Standards for mineral resources and mineral reserves.
The Franklin Project is highlighted by 2,159,000 metric tonnes of lithium carbonate equivalent at an average lithium concentration of 668 mg/L, 15,414,000 tonnes of potash (as potassium chloride) - a newly added mineral to the U.S. Geological Survey 2025 Draft Critical Mineral List - and 2,638,000 tonnes of bromide (ionized form of the commercial product bromine), contained within 0.61 km3 of brine volume.
The Report for the JV’s first project in the East Texas region of the Smackover highlights the size and quality of its brine position. Brine mineral leasing has been ongoing since 2022 in the approximate 80,000-acre Project area, with over 46,000 acres leased to support the inferred resource. The Project also contains the highest reported lithium-in-brine grades in North America, including a previously measured 806 mg/L at the Pine Forest 1 well (see news release dated 25th October 2023).
This initial Project definition marks a key step towards the ultimate goal of reaching production of over 100,000 tonnes of lithium chemicals per year in Texas through multiple phases. This goal is further supported by two additional projects the JV is planning to develop in East Texas that are anticipated to roughly triple the size of the JV’s portfolio area in the state.
The principal recommendation for next steps is to further refine the characteristics of the Upper and Middle Smackover Formation aquifers, brine chemistry and to assess reserve forecasts. This will be accomplished by drilling additional appraisal wells and re-entering three shut-in wells to facilitate the definition of a Preliminary Feasibility Study.
The JV will also conduct direct lithium extraction (“DLE”) testing of the Project brine, leveraging insights gained from Standard Lithium’s Demonstration Plant located in El Dorado, Arkansas, as well as the JV’s South West Arkansas project.
The Report is available for review under the Company’s profile on SEDAR+ at www.sedarplus.ca and on the Company’s website at https://www.standardlithium.com/projects/smackover/. For highlights of this Report, please refer to the Company’s press release dated 24 September 2025.
Qualified Person
All scientific and technical disclosure in this news release was reviewed and approved by Mr. Stephen Ross, P.Geo., British Columbia, Vice President of Resource Development for Standard Lithium and a Qualified Person for purposes of, and as that term is defined in, National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Mr. Ross is not independent of the Company.
About Smackover Lithium
Smackover Lithium is a joint venture between Standard Lithium and Equinor. Formed in May 2024, Smackover Lithium is developing multiple DLE projects in Southwest Arkansas and East Texas (the “JV Projects”). Standard Lithium owns a
About Standard Lithium
Standard Lithium is a leading near-commercial lithium development company focused on the sustainable development of a portfolio of large, high-grade lithium-brine properties in the United States. The Company prioritizes projects characterized by high-grade resources, robust infrastructure, skilled labor, and streamlined permitting. Standard Lithium aims to achieve sustainable, commercial-scale lithium production via the application of a scalable and fully integrated DLE and purification process. The Company’s flagship projects are located in the Smackover Formation, a world-class lithium brine asset, focused in Arkansas and Texas. In partnership with global energy leader Equinor, Standard Lithium is advancing the South West Arkansas Project, a greenfield project located in southern Arkansas, and actively advancing a promising lithium brine resource position in East Texas.
Standard Lithium trades on both the TSX Venture Exchange (the “TSXV”) and the NYSE American under the symbol “SLI”. Please visit the Company’s website at www.standardlithium.com.
About Equinor
Equinor is an international energy company committed to long-term value creation in a low-carbon future. Equinor’s portfolio of projects encompasses oil and gas, renewables and low-carbon solutions, with an ambition of becoming a net-zero energy company by 2050. Headquartered in Norway, Equinor is the leading operator on the Norwegian continental shelf and has offices in more than 20 countries worldwide. Equinor’s partnership with Standard Lithium to mature DLE projects builds on its broad US energy portfolio of oil and gas, offshore wind, low carbon solutions and battery storage projects.
For more information on Equinor in the US, please visit: Equinor in the US - Equinor.
Investor Inquiries
Daniel Rosen
+1 604 409 8154
investors@standardlithium.com
Media Inquiries
Neither the TSXV nor its Regulation Services Provider (as that term is defined in policies of the TSXV) accepts responsibility for the adequacy or accuracy of this release.
This news release 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”, “target”, “plan”, “forecast”, “may”, “could”, “should”, “schedule”, “predict”, “budget”, “project”, “potential” and other similar words or expressions identify forward-looking statements or information. These forward-looking statements or information may relate to intended development timelines, the potential completion of a Preliminary Feasibility Study for the Project, continued access to mineral properties or infrastructure, fluctuations in the market for lithium and its derivatives and other factors or information. 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 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.
FAQ
What did Smackover Lithium (SLI) report in its November 5, 2025 Maiden Inferred Resource for Franklin Project?
Does the Franklin Project resource include other minerals besides lithium for SLI?
How much acreage supports the Franklin Project inferred resource for SLI?
What grade milestone did SLI highlight for the Franklin Project wells?
What are the next technical steps Smackover Lithium plans after the Maiden Resource filing?
Does the Maiden Inferred Resource mean SLI is ready for production of lithium chemicals?
