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Nuvau Provides Comprehensive Exploration Update at Matagami Drilling Confirms Gold Discovery and Significant Progress at Caber Complex

Exploration Programs

Nuvau Provides Comprehensive Exploration

Update at Matagami

Drilling Confirms Gold Discovery and Significant Progress at

Caber Complex

Toronto, Ontario--(Newsfile Corp. - September 3, 2025) - Nuvau Minerals Inc. (TSXV: NMC) is sharing

positive results and significant progress at its Matagami Project in today's comprehensive exploration

update.

"Multiple new discoveries, including the recent discovery of gold mineralization, demonstrate the

potential of this large-scale property that was historically recognized solely for its base metal potential.

The confirmation of a gold-bearing orogenic system adjacent to existing mine infrastructure significantly

expands the opportunity for value creation. Nuvau is geared to continue the exploration on this large land

package in the Abitibi," said Peter van Alphen, CEO of Nuvau Minerals Inc.

Highlights include the continued validation of the orogenic gold system that was discovered adjacent to

the fully permitted Bracemac mine, and positive results from drilling additional zones on the Property,

such as high-grade base metal mineralization at Caber and Renaissance:

Discovery of Bracemac orogenic gold system

First drill hole (BRCG-25-01) intersected

8.87 g/t Au over 1.05 m, including 16.02 g/t Au

over 0.55

Visible gold observed in three of four orientation holes completed to date, confirming the

presence and continuity of the gold-bearing shear zone

Caber Complex

— 14 holes totaling 10,426 m completed to upgrade resources prior to an

updated Mineral Resource Estimate (MRE)

GCB-24-113:

5.49% Cu, 5.95% Zn, 0.15 g/t Au, and 35.66 g/t Ag

2.8 m

GCB-24-114:

4.43% Cu, 2.07% Zn, 0.12 g/t Au, and 9.05 g/t Ag

2.75 m

GCB-24-116:

1.85% Cu, 3.10% Zn, 0.05 g/t Au, and 9.81 g/t Ag

27.2 m

Renaissance Zone

— 27 holes drilled, with 16 holes containing massive to semi-massive

sulphides; initial MRE underway following highlight results including

1.03% Cu, 9.16% Zn, 0.03 g/t

Au, and 6.54 g/t Ag over 4.7 m

McLeod Extension

— MRE in progress following 7 new intersections from 5,526 m of additional

drilling to follow-up the 2023 discovery of

15.9 m grading 2.81% Cu, 14.80% Zn, and 0.39 g/t

Au

. New step-out results include:

0.52% Cu, 10.96% Zn, 0.42 g/t Au, and 11.71 g/t Ag over 4.20 m

2.45% Cu, 0.24% Zn, 0.11 g/t Au, and 11.39 g/t Ag over 7.75 m

Drilling is underway to follow-up the recent discovery of gold mineralization with 25 m of the existing mine

access ramp at the Bracemac Mine. Visible gold has now been observed in three of four holes drilled in

this new target, confirming a continuous shear zone intersected in all holes drilled to date. The system is

hosted within a tonalite intrusive rock unit in the footwall of the Bracemac Mine, a rock unit where almost

no historic holes have been drilled.

Gold exploration program

Operated by Glencore until June 2022, the Bracemac-McLeod mine was one of 12 past-producing base

metal mines on Nuvau's 1,300 km² land package. Historic mining focused entirely on copper and zinc

mineralization. Key infrastructure remains in place, and the mine remains permitted for operation. Little

to no gold exploration was undertaken by the previous operators due to the previous focus on base

metals.

Visible gold mineralization was observed in the first hole drilled to test the first of three priority gold

exploration targets that Nuvau identified on this large-scale property. The current drill campaign is aimed

at defining the parameters of this newly-identified gold-bearing structure. To-date, four drill holes spaced

25 to 40 metres apart have established the strike and dip of the host shear zone that is injected with

quartz veins containing minor pyrite. A fifth hole is underway to test 100 metres below the initial drill

holes.

Visible gold has now been observed in three holes with all holes having intersected a sheared intrusive

(tonalite) containing folded quartz-calcite-chlorite veins, mineralized with 1-3% pyrite.

The first hole

intersected 8.87 g/t Au over 1.05 m with numerous grains of visible gold identified.

Assay results from

additional holes remain pending.

Figure 1: 3D view showing general location of the gold-bearing structure

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/11236/264895_5883ee3814ecf89c_001full.jpg

Figure 2: Inclined long-section

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/11236/264895_5883ee3814ecf89c_002full.jpg

Caber Complex

Fourteen drill holes were completed totaling 10,426 m. This drilling was designed for the conversion of

resources and to collect samples for metallurgical studies in preparation for a feasibility study of the

Caber Complex deposits. A revised MRE is in progress and an updated PEA is planned with the aim of

optimizing the Caber Complex mine plan and incorporating the potential restart of the Bracemac-

McLeod Mine and mill complex into a detailed economic analysis.

Table 1: Assay results for the Caber Complex drill program

Hole ID

from

to

length

Cu%

Zn%

Au(g/t)

Ag(g/t)

GCB-24-112

Reassays ongoing

GCB-24-113

547.00

557.70

10.70

1.53

1.64

0.09

16.14

And

600.35

603.15

2.80

5.49

5.95

0.15

35.66

And

677.55

703.85

26.30

0.23

0.31

0.03

1.18

GCB-24-114

591.85

594.40

2.55

0.11

12.55

0.07

12.33

And

655.60

657.70

2.10

1.36

4.14

0.09

25.95

And

733.45

756.00

22.55

0.65

0.76

0.03

1.50

Incl

748.55

751.30

2.75

4.43

2.07

0.12

9.05

And

756.90

763.60

6.70

0.54

0.02

0.02

0.33

GCB-24-115

Reassays ongoing

GCB-24-116

509.80

537.00

27.20

1.85

3.10

0.05

9.81

And

559.30

565.50

6.20

0.51

0.21

0.01

0.95

GCB-24-117

460.50

495.00

34.50

0.89

0.99

0.10

6.69

And

495.00

498.55

3.55

0.37

0.01

0.04

6.37

GCB-24-118

415.20

417.00

1.80

0.06

0.56

0.00

1.08

And

493.80

496.80

3.00

0.01

0.44

0.00

1.00

And

565.60

583.55

17.95

0.85

2.44

0.09

14.82

And

590.35

595.10

4.75

1.24

0.56

0.13

10.27

And

603.60

626.70

23.10

1.34

0.02

0.03

2.19

Incl

610.10

615.90

5.80

2.94

0.04

0.03

4.21

GCB-24-119

505.85

507.50

1.65

3.73

6.82

0.22

28.48

And

513.30

513.70

0.40

0.61

2.16

0.14

23.00

And

519.50

519.80

0.30

1.81

0.46

0.24

14.00

And

579.85

583.45

3.60

3.66

3.43

0.21

18.36

And

605.85

617.95

12.10

1.32

2.97

0.10

14.74

And

676.05

681.40

5.35

0.01

0.03

0.00

0.79

And

690.15

744.50

54.35

0.25

0.41

0.02

0.84

Incl

710.50

715.35

4.85

0.35

4.10

0.02

1.24

Incl

717.00

720.85

3.85

1.17

0.06

0.04

3.14

GCB-24-120

675.50

695.65

20.15

0.84

1.46

0.07

6.50

And

796.05

829.50

33.45

0.58

0.10

0.03

2.61

Incl

811.75

820.00

8.25

1.39

0.24

0.04

5.64

Incl

811.75

814.75

3.00

2.74

0.20

0.03

7.85

GCB-25-121

Reassays ongoing

GCB-25-122

Reassays ongoing

GCB-25-123

410.60

416.40

5.80

0.67

0.55

0.03

4.18

And

545.20

545.55

0.35

0.74

4.56

0.12

18.00

And

568.50

569.05

0.55

1.52

4.14

0.38

26.00

And

626.15

627.65

1.50

0.87

2.56

0.08

9.20

And

678.35

720.40

42.05

0.56

0.58

0.04

5.09

Incl

678.35

683.20

4.85

3.04

3.45

0.25

30.73

Incl

706.45

720.40

13.95

0.59

0.44

0.03

3.29

And

735.10

738.40

3.30

0.66

0.01

0.01

1.21

GCB-25-124

636.00

640.65

4.65

0.45

2.42

0.10

3.43

And

663.35

684.30

20.95

0.69

0.01

0.02

0.38

GCB-25-125

Reassays ongoing

Renaissance Zone

The Renaissance Zone was discovered by Nuvau in 2023, targeting a geophysical anomaly located in

the "West Camp" of the Matagami Property, immediately north of the Caber Complex deposits.

A total of 27 holes were drilled to test the Renaissance Zone, with 16 intersecting massive and semi-

massive sulphide zones. An initial MRE for Renaissance is in progress.

Results from the most recent

drilling at Renaissance are provided in Table 2, below.

Table 2: Assays results for the Renaissance drilling program

Hole ID

from

to

length

Cu%

Zn%

Au(g/t)

Ag(g/t)

REN-24-15

329.85

337.65

7.80

0.69

7.41

0.20

22.66

REN-24-16

280.80

281.80

1.00

0.12

1.35

0.01

5.00

REN-24-17

258.70

279.30

20.60

0.36

2.79

0.04

7.49

Incl

258.70

263.15

4.45

0.45

2.95

0.13

23.22

And

274.60

279.30

4.70

1.03

9.16

0.03

6.54

REN-24-18A

No significant mineralization

REN-24-18

384.00

384.70

0.70

0.32

0.08

0.03

6.00

REN-24-19

Reassays ongoing

REN-24-20

463.65

478.35

14.70

0.72

1.66

0.05

6.47

Incl

463.65

472.75

9.10

0.77

1.86

0.03

5.48

And

476.10

478.35

2.25

1.47

3.13

0.20

18.60

REN-24-21

Reassays ongoing

REN-25-22

380.90

381.55

0.65

0.12

2.22

0.03

6.00

And

398.20

398.50

0.30

0.70

0.23

0.05

11.00

And

412.35

412.75

0.40

0.61

3.70

0.04

19.00

REN-25-23

294.00

295.00

1.00

0.01

0.85

0.00

0.00

And

303.00

303.60

0.60

0.01

0.81

0.00

0.00

REN-25-24

No significant mineralization

REN-25-25

No significant mineralization

REN-25-

25EXT

No significant mineralization

Figure 3: Renaissance Zone long-section

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/11236/264895_5883ee3814ecf89c_003full.jpg

McLeod extension

Intersected in 2023, the McLeod Mine extension demonstrated the potential for additional resources

adjacent to existing mine workings, at the permitted past-producing Bracemac-McLeod Mine.

The extension discovery hole (MCL-13-31W1) returned

15.9 m grading 2.81% Cu, 14.80% Zn, and

0.39 g/t Au

.

Seven new intersections from 5,526 m of additional drill holes completed will be incorporated into a

MRE that is in progress. This zone will, along with the Caber Complex, be incorporated into future

studies assessing the potential restart of the Bracemac-McLeod Mine and associated economic

analysis. New results from the McLeod drill program are provided in Table 3 below.

Table 3: Assay results for the McLeod extension drilling program

Hole ID

from

to

length

Cu%

Zn%

Au(g/t)

Ag(g/t)

MCL-13-31W6

1498.6

1502.8

4.2

0.23

2.39

0.14

11.90

Incl

1499

1500.05

1.05

0.65

3.92

0.13

20.24

MCL-13-31W7

1400.6

1402.25

1.65

0.19

4.32

0.06

3.55

And

1426.85

1432.55

5.7

0.09

1.19

0.31

3.30

MCL-13-31W8

1248.6

1251.3

2.7

0.18

2.84

0.45

6.59

MCL-18-90W2

1605

1607.2

2.2

0.09

0.02

0.11

1.64

MCL-18-90W3

1625.7

1627.4

1.7

0.09

0.54

0.18

3.24

MCL-18-91W1

1500.2

1502.35

2.15

1.44

0.07

0.31

10.65

And

1510

1519.5

9.5

0.88

0.05

0.09

7.74

And

1531.5

1534.5

3

0.72

0.06

0.08

4.67

MCL-18-91W2

1586.8

1611.75

24.95

1.04

2.36

0.14

7.03

Incl

1586.8

1591

4.2

0.52

10.96

0.42

11.71

Incl

1604

1611.75

7.75

2.45

0.24

0.11

11.39

About Nuvau Minerals Inc.

Nuvau Minerals is a Canadian mineral exploration company advancing the Matagami mining camp,

covering more than 1,300 km² of highly prospective ground in the Abitibi region of mine-friendly Québec.

Nuvau's principal asset is the Matagami Property, which is host to significant existing processing

infrastructure and multiple mineral deposits, but has never been subjected to a comprehensive gold-

focused exploration program. The Company is leveraging innovative exploration methods, including AI-

supported generative targeting and hydro-geochemistry, to identify and develop new gold and base

metal deposits.

Qualified Person and Quality Assurance

Gilles Roy P. Geo. (Qc), Director of Exploration of Nuvau and a "qualified person" as is defined by

National Instrument 43-101, has verified the scientific and technical data disclosed in this news release,

and has otherwise reviewed and approved the scientific and technical information in this news release.

Drill core samples are sawn by staff technicians to create half core splits. One split is retained in the drill

core box for archival purposes with a sample tag affixed at each sample interval and the other split is

placed in a labelled plastic bag along with a corresponding sample number tag and placed in the

shipment queue.

Quality control samples including blind certified reference material ("CRM"), blank material, and core

duplicates are inserted at a frequency of 1 in every 20 samples and sample batches of up to 60 samples

were then shipped directly by Nuvau personnel to the ALS Canada Ltd. preparation laboratory in Rouyn-

Noranda, Québec.

All submitted core samples are crushed in full to 95 % passing less than 2 mm (ALS code CRU-32). A

1000-gram sample was then riffled split from the crushed material and pulverized to 90 % passing 75

μm (SPL-22 and PUL-32a). Pulps are shipped from the preparation laboratory to ALS Canada Ltd.'s

analytical lab in North Vancouver, British Columbia, for assay.

Lead, silver, copper and zinc analyses were determined by ore grade four acid digestion with an

inductively coupled plasma atomic emission spectroscopy ("ICP-AES") or atomic absorption

spectroscopy ("AAS") finish (ALS codes Pb-OG62, Ag-OG62, Cu-OG62 and ZnOG62), whereas gold

was determined by 50 g fire assay analysis with an AAS finish (code Au-AA23).

A second method, PhotonAssay analysis (code Au-PA01), was used on a single sample from hole

BRCG-25-01 where visible gold was observed. The remaining reject material was pulverized to 95%

passing 106um (PUL-32a) and recombined with the remaining master pulp material and split into three

jars (~500g each) and shipped from the preparation laboratory to ALS Canada Ltd.'s analytical lab in

Thunder Bay Ontario, for photon assayed. The reported value is the combined weighted assay result

representing the entire length of the sample. For comparison gold determined by 50 g fire assay

analysis return 15.75 g/t Au, compared to 16.02 g/t Au by PhotonAssay.

ALS Canada Ltd. is an accredited, independent commercial analytical firm registered to ISO/IEC

17025:2017 and ISO 9001:2015.

For further information please contact:

Nuvau Minerals Inc.

Peter van Alphen

President and CEO

Telephone: 416-525-6063

Email:

[email protected]

Cautionary Statements

This news release contains forward-looking statements and forward-looking information (collectively,

"forward-looking statements") within the meaning of applicable securities laws. Any statements that

are contained in this news release that are not statements of historical fact may be deemed to be

forward-looking statements. Forward-looking statements are often identified by terms such as "may",

"should", "anticipate", "will", "estimates", "believes", "intends" "expects" and similar expressions

which are intended to identify forward-looking statements. More particularly and without limitation, this

news release contains forward-looking statements concerning drill results relating to the Matagami

Property, the results of the PEA, the potential of the Matagami Property, the timing and

commencement of any production, the restart of the Bracemac-McLeod Mine,

the completion of the

earn-in of the Matagami Property and the timing and completion of any technical studies, feasibility

studies or economic analyses. Forward-looking statements are inherently uncertain, and the actual

performance may be affected by a number of material factors, assumptions and expectations, many

of which are beyond the control of the Company, including expectations and assumptions concerning

the Company and the Matagami Property. Readers are cautioned that assumptions used in the

preparation of any forward-looking statements may prove to be incorrect. Events or circumstances

may cause actual results to differ materially from those predicted as a result of numerous known and

unknown risks, uncertainties, and other factors, many of which are beyond the control of the Company.

Readers are further cautioned not to place undue reliance on any forward-looking statements, as such

information, although considered reasonable by the management of the Company at the time of

preparation, may prove to be incorrect and actual results may differ materially from those anticipated.

The forward-looking statements contained in this news release are made as of the date of this news

release, and are expressly qualified by the foregoing cautionary statement. Except as expressly

required by securities law, neither the Company nor Nuvau undertakes any obligation to update

publicly or to revise any of the included forward-looking statements, whether as a result of new

information, future events or otherwise.

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 news release. No stock exchange, securities commission or other

regulatory authority has approved or disapproved the information contained herein.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/264895