Smackover Lithium Files Definitive Feasibility Study for Its South West Arkansas Project, North America's Highest-Grade Reported Lithium Brine Reserve
Original announcement by tmx on
- Company
- Standard Lithium Ltd.
- Ticker
- SLI
- Exchange
- TSX
- Region
- Arkansas
- Primary commodity
- Lithium
- Secondary commodities
- None reported
- Document categories
- Resource update, Production
- Extracted
- 2026-08-24 10:53:38 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Smackover Lithium has filed a Definitive Feasibility Study (DFS) for its South West Arkansas project, reporting 447,000 tonnes of lithium carbonate equivalent (LCE) in Proven Reserves. The project targets a production capacity of 22,500 tonnes of battery-quality lithium carbonate per annum with a 20.2% unlevered pre-tax IRR.
Reasoning: The filing of a DFS for a major lithium project with significant reserves and a strong IRR is a major de-risking milestone for the company.
Positive factors
- Definitive Feasibility Study (DFS) completed
- High-grade lithium brine reserves reported
- Strong IRR of 20.2%
- First commercial DLE operation in the US
Negative factors
- High capital expenditure requirement of $1.45 billion
Facts used in scoring: 3
Classification and evidence
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: The announcement is the filing of a Definitive Feasibility Study.
Evidence · text
“announced today that the Definitive Feasibility Study ("DFS" or the "Report") for its South West Arkansas ("SWA") project”
Proven Reservepositive
Measured Resource with demonstrated economic viability after applying modifying factors.
Why it applies: The DFS reports 447,000 tonnes of LCE as Proven Reserves.
Evidence · text
“producing 447,000 tonnes (Proven Reserves) of lithium carbonate equivalent ("LCE")”
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: The release states the technical disclosure was reviewed and approved by a Qualified Person, Mr. Stephen Ross, P.Geo.
Evidence · text
“All scientific and technical disclosure in this news release was reviewed and approved by Mr. Stephen Ross, P.Geo., ... and a Qualified Person”
Extracted facts
Stored fact records: 3. Some facts used in scoring do not have a stored record.
Resource Estimates (3)
provenlithiumTonnes: 447000Grade Unit: tContained Metal: 447000Contained Unit: tView all detailsHide details
Identity
- Commodity
- lithium
- Ticker
- SLI
Resource Data
- Category
- proven
- Tonnes
- 447000
- Grade Unit
- t
- Contained Metal
- 447000
- Contained Unit
- t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-10-14T00:00:00.000Z
Reasoning: Significant proven reserve reported in a DFS.
Positive factors
- Proven reserve status
Evidence · text
“producing 447,000 tonnes (Proven Reserves) of lithium carbonate equivalent ("LCE")”
indicatedlithiumTonnes: 1177000Grade Unit: tContained Metal: 1177000Contained Unit: tView all detailsHide details
Identity
- Commodity
- lithium
- Ticker
- SLI
Resource Data
- Category
- indicated
- Tonnes
- 1177000
- Grade Unit
- t
- Contained Metal
- 1177000
- Contained Unit
- t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-10-14T00:00:00.000Z
Reasoning: Large indicated resource component reported as part of the M&I total.
Positive factors
- Large M&I resource base
Evidence · text
“38% of the in-situ Measured and Indicated Resources of 1,177,000 tonnes LCE”
measuredlithiumTonnes: 1177000Grade Unit: tContained Metal: 1177000Contained Unit: tView all detailsHide details
Identity
- Commodity
- lithium
- Ticker
- SLI
Resource Data
- Category
- measured
- Tonnes
- 1177000
- Grade Unit
- t
- Contained Metal
- 1177000
- Contained Unit
- t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-10-14T00:00:00.000Z
Reasoning: Measured resource component reported as part of the M&I total.
Positive factors
- High confidence resource category
Evidence · text
“38% of the in-situ Measured and Indicated Resources of 1,177,000 tonnes LCE”
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.