# Preliminary Metallurgical Test Work Confirms High Quality Lithium

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7

Original source: https://www.rns-pdf.londonstockexchange.com/rns/0742J_-2017-6-23.pdf

Publisher: research

Original announcement: Unknown date

Analysis by Minestarters Atlas

Atlas analysis published: 2026-11-08T14:11:43.539Z

Atlas analysis updated: 2026-11-08T14:11:43.539Z

- Company: Unavailable

- Ticker: SAV

- Exchange: LSE

- Region: northern Portugal

- Primary commodity: Lithium

- Secondary commodities: Iron ore, Tin, Tantalum

- Document categories: Metallurgy, Other

- Extracted: 2026-11-08 14:11:43 UTC

Narrative sentiment: 0.74 · Bullish

## Minestarters Atlas summary

Savannah reports preliminary metallurgical test work from the Mina do Barroso lithium project in northern Portugal. The work indicates a high-grade spodumene concentrate can be produced, with ~83.7% Li2O recovery in a simple flotation test and a very pure ~8% Li2O product from HLS. The release also says a 3,000-5,000m drill programme will start shortly to help define a JORC resource.

Reasoning: The release reports encouraging preliminary metallurgy for the Mina do Barroso lithium project, with strong flotation recovery and a high-purity concentrate. It is materially positive for project de-risking, but the work is early-stage and still requires optimisation.

- Positive factor: preliminary metallurgical test work confirms a saleable spodumene concentrate can be produced

- Positive factor: single stage flotation achieved ~83.7% Li2O recovery at ~5.9% Li2O

- Positive factor: HLS shows a very pure \(~8%\) Li2O product can be produced

- Positive factor: conventional commercially available processing technologies were used

- Negative factor: preliminary test work only

- Negative factor: further metallurgical test work will now be conducted to further optimise the lithium recovery process

- Negative factor: no reagent consumption disclosed

Low confidence — this extraction should be reviewed alongside the original source.

- Rubric flag: drill\_results not extracted — This document is primarily a metallurgy release, not a drill-results announcement. If you need drilling facts, use the planned drilling reference only as a future work note, not as completed drill results.

Facts used in scoring: 18

## Classification and evidence

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: The release describes flotation test work and a one stage float, which is a mill-style processing route.

Evidence · text

> Single stage floatation test

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: The headline flotation result reports ~83.7% Li2O recovery, which is strong for the reported test context.

Evidence · text

> achieved ~83.7% Li2O recovery

**Free Milling**

Polarity: positive

Definition: Simple, clean ore amenable to standard processing without oxidation.

Why it applies: The company says 'a simple conventional recovery process is likely' and cites conventional commercially available processing technologies.

Evidence · text

> a simple conventional recovery process is likely

**Bench Scale Only**

Polarity: negative

Definition: Only preliminary bench tests completed — no locked-cycle or pilot work.

Why it applies: The work is preliminary metallurgical test work on a composite sample, not pilot-scale testing.

Evidence · text

> preliminary metallurgical test work

**Single Domain Only**

Polarity: negative

Definition: Testing limited to one composite or domain — representativeness not established.

Why it applies: The work is described on a single composite sample from the NOA and Reservatorio deposits.

Evidence · text

> a composite sample from the NOA and Reservatorio Deposits

**QA/QC Disclosed**

Polarity: positive

Story-specific tag

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: The JORC appendix states that standards and duplicates were used.

Evidence · text

> Standards and duplicates we used

**True Width Disclosed**

Polarity: neutral

Story-specific tag

Definition: Actual thickness perpendicular to structure is stated, not just downhole length.

Why it applies: This release does not state true width for any drilling interval; no such tag applies.

Evidence · text

> true width not known

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: the document describes a gravity route \("gravity"\)

**Multi-Domain Tested**

Polarity: positive

Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed.

Why it applies: 2 distinct composites were tested

## Extracted facts

Stored fact records: 18. Some facts used in scoring do not have a stored record.

## Metallurgical Results (18)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-0)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: single stage flotation
- Sample: Test work Composite

#### Recovery

- Recovery: 83.7 %
- Recovery Basis: actual\_test
- Head Grade: 1.95
- Head Grade Unit: % Li2O
- Conc. Grade: 5.9
- Conc. Grade Unit: % Li2O

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This is the key metallurgical result: a strong flotation recovery from a high-grade composite with a saleable concentrate grade.

- Positive factor: 83.7% Li2O recovery is reported

- Positive factor: head grade of ~1.95% Li2O is high

- Positive factor: simple one stage float achieved ~5.9% Li2O concentrate

- Positive factor: conventional commercially available processing technologies were used

- Negative factor: preliminary test work only

- Negative factor: further optimisation is still required

Evidence · text

> achieved ~83.7% Li₂O recovery at ~5.9% Li₂O

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 83.7% is at or above the exceptional band \(80%\)

### gravity

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-1)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: gravity
- Processing Route: heavy liquid separation
- Sample: Test work Composite

#### Recovery

- Recovery: 60 %
- Recovery Basis: actual\_test
- Conc. Grade: 8
- Conc. Grade Unit: % Li2O

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The HLS results support the process concept and point to a high-grade concentrate, although the document does not state a direct HLS recovery figure.

- Positive factor: HLS shows a very pure \(~8%\) Li2O product can be produced

- Positive factor: gravity-style separation indicates recoverable lithium minerals

- Negative factor: recovery is not explicitly stated for the HLS product

- Negative factor: preliminary work only

Evidence · text

> HLS shows a very pure \(~8%\) Li₂O product can be produced

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 60% is below the weak band \(65%\)

### Fact 3

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-2)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Sample: Composite sample from the NOA and Reservatorio Deposits

#### Recovery

- Head Grade: 1.95
- Head Grade Unit: % Li2O

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The composite head grade helps anchor the metallurgy results and confirms the feed is lithium-rich.

- Positive factor: single analysis of the combined sample confirmed a high Li2O head grade

- Negative factor: head grade is from a composite sample rather than a drilled interval

- Negative factor: preliminary characterisation only

Evidence · text

> confirmed a high Li₂O head grade \(~1.95% Li₂O\)

### Fact 4

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-3)

Mina do Barroso · iron\_ore

#### Identity

- Project: Mina do Barroso
- Commodity: iron\_ore
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Sample: Composite sample from the NOA and Reservatorio Deposits

#### Recovery

- Head Grade: 0.902
- Head Grade Unit: % Fe2O3

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The low iron head grade is supportive of concentrate purity, but it is secondary to the lithium result.

- Positive factor: low Fe2O3 head grade is explicitly reported

- Negative factor: no economic significance is discussed for the iron grade

Evidence · text

> low Fe₂O₃ head grade \(~0.9%\)

### gravity

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-4)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: gravity
- Processing Route: heavy liquid separation at SG 2.7 and 2.96
- Sample: Test work Composite P100 6.3mm +1mm

#### Recovery

- Recovery: 60 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The gravity separation work indicates a viable route for rejecting barren material, but the result is framed as a suggestion rather than a final recovery outcome.

- Positive factor: DMS at SG 2.7 is suggested as ~60% mass rejection is feasible

- Negative factor: this is a process suggestion rather than a direct recovery result

- Negative factor: optimisation remains required

Evidence · text

> ~60% mass rejection is feasible at ~10% Li2O loss

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 60% is below the weak band \(65%\)

### gravity

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-5)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: gravity
- Processing Route: heavy liquid separation at SG 2.7 and 2.96
- Sample: Test work Composite P100 6.3mm -1+0.045mm

#### Recovery

- Recovery: 64.34 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This is a detailed HLS result from the finer fraction, showing the ore responds to gravity-style separation.

- Positive factor: HLS partitioning results are reported for the finer size fraction

- Negative factor: the document does not explicitly describe this as a final recovery metric

Evidence · text

> SG 2.96 Sinks 20.46% 79290 64.34%

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 64.34% is below the weak band \(65%\)

### gravity

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-6)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: gravity
- Processing Route: heavy liquid separation at SG 2.7 and 2.96
- Sample: Test work Composite P100 6.3mm -1+0.045mm

#### Recovery

- Recovery: 23.5 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This is another HLS result from the finer fraction, useful for process understanding but not the headline result.

- Positive factor: HLS partitioning results are reported for the finer size fraction

- Negative factor: the document does not explicitly describe this as a final recovery metric

Evidence · text

> SG 2.96 Float 13.46% 44020 23.50%

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 23.5% is below the weak band \(65%\)

### gravity

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-7)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: gravity
- Processing Route: heavy liquid separation at SG 2.7 and 2.96
- Sample: Test work Composite P100 6.3mm -1+0.045mm

#### Recovery

- Recovery: 12.16 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This is the SG 2.7 float fraction result from the finer-size HLS test.

- Positive factor: HLS partitioning results are reported for the finer size fraction

- Negative factor: the document does not explicitly describe this as a final recovery metric

Evidence · text

> SG 2.7 Float 66.08% 4640 12.16%

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 12.16% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-8)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 35.18 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This row captures one of the flotation circuit streams from the sighter test and helps document the process response.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Positive factor: results provide process detail for the composite

- Negative factor: this is a concentrate stream grade rather than a final product recovery statement

- Negative factor: multiple circuit streams are listed

Evidence · table

> Re-Cl Con 1 11.28% 63010 35.18% 0.752 15.96% 63.446 9.74%

Context: Flotation table; Re-Cl Con 1; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 35.18% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-9)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 18.79 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: Additional flotation circuit data from the sighter test are disclosed here.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Negative factor: this is a circuit stream result rather than a final product summary

Evidence · table

> Re-Cl Con 2 6.48% 58590 18.79% 0.737 8.98% 63.874 5.63%

Context: Flotation table; Re-Cl Con 2; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 18.79% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-10)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 22.18 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: Additional flotation circuit data from the sighter test are disclosed here.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Negative factor: this is a circuit stream result rather than a final product summary

Evidence · table

> Re-Cl Con 3 7.82% 57350 22.18% 0.669 9.83% 64.044 6.81%

Context: Flotation table; Re-Cl Con 3; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 22.18% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-11)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 7.57 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This is a lower-recovery flotation concentrate stream from the same sighter test.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Negative factor: this is a circuit stream result rather than a final product summary

Evidence · table

> Re-Cl Con 4 3.24% 47200 7.57% 0.580 3.53% 65.600 2.89%

Context: Flotation table; Re-Cl Con 4; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 7.57% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-12)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 1.16 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The tailings stream result shows residual lithium remaining in the flotation tailings.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Negative factor: this is a tailings stream result

Evidence · table

> Cl Tail 12.28% 1910 1.16% 0.145 3.35% 76.834 12.83%

Context: Flotation table; Cl Tail; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 1.16% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-13)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 1.04 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The rougher tailing stream still retains some lithium, indicating incomplete recovery in the test circuit.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Negative factor: this is a tailings stream result

Evidence · table

> Ro Tail 39.75% 530 1.04% 0.072 5.38% 80.672 43.61%

Context: Flotation table; Ro Tail; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 1.04% is below the weak band \(65%\)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-14)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Program Status: preliminary
- Test Type: flotation
- Processing Route: rougher-cleaner-re-cleaner spodumene flotation
- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Recovery

- Recovery: 48.3 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The ultrafine fraction retains substantial lithium and is part of the process characterisation.

- Positive factor: flotation testwork is reported at P80 0.106mm

- Negative factor: this is a -0.02mm fraction result rather than the headline product

Evidence · table

> -0.02mm 9.52% 15410 7.26% 2.699 48.30% 69.356 8.98%

Context: Flotation table; -0.02mm; Li2O% dist.

#### Tags used in scoring

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the flotation signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 48.3% is below the weak band \(65%\)

### Fact 16

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-15)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1

#### Recovery

- Conc. Grade: 5.9
- Conc. Grade Unit: % Li2O

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: A ~5.9% Li2O concentrate is a strong product grade for spodumene processing and supports the positive interpretation of the flotation result.

- Positive factor: headline flotation result achieved ~5.9% Li2O concentrate grade

- Positive factor: the company describes this as very positive

- Negative factor: optimisation is still required

- Negative factor: the figure is approximate

Evidence · text

> achieved ~83.7% Li2O recovery at ~5.9% Li2O

### Fact 17

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-16)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Sample: Test work Composite P80 0.106mm Sighter Three-Stage Flotation Test \#1
- Grind P80: 106 µm

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: The grinding size is an important process parameter for the flotation programme.

- Positive factor: P80 0.106mm is explicitly stated for the flotation test

- Negative factor: no recovery figure attached to this specific note

Evidence · text

> P80 0.106mm

### Fact 18

[Link to this fact](https://atlas-extractions.minestarters.com/news/preliminary-metallurgical-test-work-confirms-high-quality-lithium--d216d0ce-e11b-485d-998a-5740a924b5d7#fact-metallurgical-facts-17)

Mina do Barroso · lithium

#### Identity

- Project: Mina do Barroso
- Commodity: lithium
- Region: northern portugal
- Reported Region: northern Portugal
- Ticker: SAV

#### Test Work

- Sample: Test work Composite

#### Recovery

- Head Grade: 1.95
- Head Grade Unit: % Li2O

#### Lab

- Laboratory: Nagrom Metallurgical

#### Location

- Loc. Confidence: medium

#### Review

- Needs Review: No
- Historical: No

Reasoning: This repeated composite head grade is included because it appears in the release as a core result supporting the testwork.

- Positive factor: headline composite grade is high

- Negative factor: the grade is from a composite sample rather than a deposit-wide estimate

Evidence · table

> Composite Mass Li2O Fe2O3 kg % % Test work Composite 35.9 1.95% 0.902

Context: Composite table; Test work Composite; Li2O

## 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.