Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20

Original announcement by research on

Company
Savannah Resources Plc
Ticker
SAV
Exchange
LSE
Region
northern Portugal
Primary commodity
Lithium
Secondary commodities
None reported
Document categories
Drill results
Extracted
2026-10-20 00:16:21 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

Savannah reported multiple new lithium drill intercepts from Aldeia and Grandao at the Mina do Barroso project in northern Portugal. The highlight is 19ALARC024, which returned 45m at 1.67% Li2O from 89m including 22m at 2.00% Li2O, described as the highest-grade interval reported to date at the project. The release also says the results are being incorporated into a geology model ahead of an updated Mineral Resource estimate.

Reasoning: High-grade lithium drill results from an active exploration/resource-growth program are materially positive, with strong widths and a new best intercept, but geometry is still downhole-apparent and the program remains ongoing.

Positive factors

  • Multiple lithium intercepts reported at Aldeia and Grandao, including 45m at 1.67% Li2O from 89m and 22m at 2.00% Li2O in 19ALARC024
  • Results are described as the highest-grade ever reported at Mina do Barroso to date
  • Intervals are backed by tabled drill results with collar data and a stated 0.5% Li2O cut-off with no more than 2m internal dilution
  • QA/QC and Competent Person disclosure are included

Negative factors

  • Results are reported as down hole intercepts and the release states true width is not known in the main reporting table
  • Further drilling and an updated Mineral Resource estimate are still pending
  • Several holes are pending assays

Facts used in scoring: 10

Classification and evidence

QA/QC Disclosedpositive

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

Why it applies: The release states standards, blanks and duplicates were used and names ALS as the laboratory.

Evidence · text

“Standards/blanks and duplicates we inserted on a 1:20 ratio”

True Width Disclosedpositive

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

Why it applies: The JORC table says the drill holes were oriented to get as close to true width as possible and notes the pegmatite dip.

Evidence · text

“The drill holes are detailed in the table in the main release and the pegmatite at Aldeia appears to dip at around 30degrees”

Cut Off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: The release discloses a 0.5% Li2O cut-off for the tables, but the exploration text does not fully define the compositing basis for all reported intervals beyond the table note.

Evidence · text

“using a 0.5% Li2O cut-off”

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: The release explicitly positions Aldeia as circa 2km south east of the Grandao deposit.

Evidence · text

“circa 2km south east of the Grandao deposit”

Extracted facts

Stored fact records: 10. Some facts used in scoring do not have a stored record.

Drill Results (10)

19ALARC024Mina do Barroso · lithiumGrade: 1.67Grade Unit: %Intercept: 45 mView all details
Link to this fact

Identity

Hole ID
19ALARC024
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.67
Grade Unit
%
Intercept
45 m
From
89 m
To
134 m
Hole Depth
96 m
Intercept Depth
89 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC024:89-134
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
602921
Northing
4606712
Elevation
580 m
Azimuth
0 °
Dip
-90 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Flagship lithium intercept with strong grade and width, plus a standout sub-interval, making it the most material result in the release.

Positive factors

  • 45m intercept at 1.67% Li2O is strong grade and width
  • This interval is described as the highest-grade ever reported at Mina do Barroso to date
  • Includes a higher-grade sub-interval that strengthens the result
  • Cut-off and internal dilution are disclosed

Negative factors

  • Reported as downhole interval rather than stated true width

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC024Mina do Barroso · lithiumGrade: 2Grade Unit: %Intercept: 22 mView all details
Link to this fact

Identity

Hole ID
19ALARC024
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
2
Grade Unit
%
Intercept
22 m
From
100 m
To
122 m
Hole Depth
96 m
Intercept Depth
100 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC024:100-122
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
602921
Northing
4606712
Elevation
580 m
Azimuth
0 °
Dip
-90 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: High-grade lithium sub-interval that materially upgrades the headline intercept and is explicitly framed as the best reported at the project.

Positive factors

  • 22m at 2.00% Li2O is a strong higher-grade sub-interval
  • The release explicitly calls this the highest-grade ever reported at Mina do Barroso to date
  • Supports continuity within the broader 45m mineralized interval

Negative factors

  • Downhole width only; true width not stated

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC024Mina do Barroso · lithiumGrade: 0.71Grade Unit: %Intercept: 12.5 mView all details
Link to this fact

Identity

Hole ID
19ALARC024
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
0.71
Grade Unit
%
Intercept
12.5 m
From
144 m
To
156.5 m
Hole Depth
96 m
Intercept Depth
144 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC024:144-156.5
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
602921
Northing
4606712
Elevation
580 m
Azimuth
0 °
Dip
-90 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Material but secondary lithium interval that confirms stacked mineralization within the same hole.

Positive factors

  • Additional mineralized interval below the main 45m zone
  • Still above the stated 0.5% Li2O cut-off

Negative factors

  • Lower grade than the headline interval
  • Reported as downhole intercept without true width

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC028Mina do Barroso · lithiumGrade: 1.47Grade Unit: %Intercept: 31.73 mView all details
Link to this fact

Identity

Hole ID
19ALARC028
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.47
Grade Unit
%
Intercept
31.73 m
From
80 m
To
111.73 m
Hole Depth
191 m
Intercept Depth
80 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC028:80-111.73
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
602920
Northing
4606715
Elevation
583 m
Azimuth
127 °
Dip
-75 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Strong lithium intercept with good thickness and grade, adding confidence to the Aldeia mineralized zone.

Positive factors

  • 31.73m at 1.47% Li2O is a strong width-grade combination
  • Supports continuity in the Aldeia pegmatite body

Negative factors

  • Downhole interval only

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC028Mina do Barroso · lithiumGrade: 1.14Grade Unit: %Intercept: 31.5 mView all details
Link to this fact

Identity

Hole ID
19ALARC028
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.14
Grade Unit
%
Intercept
31.5 m
From
144 m
To
175.5 m
Hole Depth
191 m
Intercept Depth
144 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC028:144-175.5
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
602920
Northing
4606715
Elevation
583 m
Azimuth
127 °
Dip
-75 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Robust deeper lithium interval that supports stacked mineralization and depth persistence.

Positive factors

  • Another substantial interval in the same hole adds depth continuity
  • Grade remains above the cut-off

Negative factors

  • Lower grade than upper interval
  • True width not stated

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC026Mina do Barroso · lithiumGrade: 1.48Grade Unit: %Intercept: 17 mView all details
Link to this fact

Identity

Hole ID
19ALARC026
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.48
Grade Unit
%
Intercept
17 m
From
96 m
To
112.8 m
Hole Depth
94 m
Intercept Depth
96 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC026:96-112.8
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
603033
Northing
4606824
Elevation
626 m
Azimuth
323 °
Dip
-65 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Strong lithium intercept with good grade and width, contributing materially to the Aldeia result set.

Positive factors

  • 17m at 1.48% Li2O is a strong intercept
  • Adds to the Aldeia mineralized footprint

Negative factors

  • No true width stated

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC026Mina do Barroso · lithiumGrade: 1.4Grade Unit: %Intercept: 24 mView all details
Link to this fact

Identity

Hole ID
19ALARC026
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.4
Grade Unit
%
Intercept
24 m
From
117 m
To
141 m
Hole Depth
94 m
Intercept Depth
117 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC026:117-141
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
603033
Northing
4606824
Elevation
626 m
Azimuth
323 °
Dip
-65 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Strong, continuous lithium interval that reinforces the thickness of the Aldeia pegmatite body.

Positive factors

  • 24m at 1.40% Li2O is a strong interval
  • Supports broader mineralized thickness at Aldeia

Negative factors

  • Downhole width only

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19ALARC018Mina do Barroso · lithiumGrade: 1.17Grade Unit: %Intercept: 21 mView all details
Link to this fact

Identity

Hole ID
19ALARC018
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.17
Grade Unit
%
Intercept
21 m
From
0 m
To
21 m
Hole Depth
70 m
Intercept Depth
0 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19ALARC018:0-21
Mining Method
unknown

Location

Location
Aldeia Quarry
Easting
603015
Northing
4606588
Elevation
600 m
Azimuth
0 °
Dip
-90 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Near-surface lithium intercept of meaningful width and grade, supporting shallow mineralization at Aldeia.

Positive factors

  • 21m from surface at 1.17% Li2O indicates near-surface mineralization
  • Supports potential shallow mineralized continuity

Negative factors

  • No true width stated

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19GRARC131Mina do Barroso · lithiumGrade: 1.08Grade Unit: %Intercept: 12 mView all details
Link to this fact

Identity

Hole ID
19GRARC131
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.08
Grade Unit
%
Intercept
12 m
From
28 m
To
40 m
Hole Depth
75 m
Intercept Depth
28 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19GRARC131:28-40
Mining Method
unknown

Location

Location
Grandao
Easting
601756
Northing
4608138
Elevation
532 m
Azimuth
0 °
Dip
-90 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Useful shallow lithium interval that supports continuity in the Grandao area within the proposed stage 1 pit development.

Positive factors

  • Near-surface extension at the proposed stage 1 pit area
  • Grade and width are both meaningful

Negative factors

  • Downhole width only

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

19GRARC130Mina do Barroso · lithiumGrade: 1.7Grade Unit: %Intercept: 6 mView all details
Link to this fact

Identity

Hole ID
19GRARC130
Project
Mina do Barroso
Commodity
lithium
Region
northern portugal
Reported Region
northern portugal
Ticker
SAV

Geometry

Grade
1.7
Grade Unit
%
Intercept
6 m
From
36 m
To
42 m
Hole Depth
78 m
Intercept Depth
36 m

Classification

Deposit Type
other
Program
exploration
Sample Type
drill
Group ID
19GRARC130:36-42
Mining Method
unknown

Location

Location
Grandao
Easting
601770
Northing
4608163
Elevation
535 m
Azimuth
0 °
Dip
-90 °
Loc. Confidence
high
Loc. Source
document

QA/QC

Laboratory
ALS
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks, duplicates

Compositing

Cutoff Grade
0.5
Cutoff Unit
% Li2O
Dilution Disclosed
Yes
Max Dilution
2 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Reasoning: Good-grade shallow lithium intercept that reinforces near-surface mineralization at Grandao.

Positive factors

  • Higher grade interval at shallow depth
  • Confirms mineralisation near surface

Negative factors

  • Shorter width than the headline Aldeia intervals

Tags used in scoring

QA/QC Disclosedpositive

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

Why it applies: qaqc_disclosed is true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "Savannah Resources Plc Aldeia Delivers Highest-Grade Lithium Mineralisation to Date Including 22m @ 2% Li20 Mina do Barr"

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.