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Bonterra Intersects 10.97 g/t Au over 10.1 m, including 16.36 g/t Au over 4.7 m on its 100% owned Desmaraisville South Project

Drill Results

Bonterra Intersects 10.97 g/t Au over 10.1 m,

including 16.36 g/t Au over 4.7 m on its 100%

owned Desmaraisville South Project

Val-d'Or, Quebec--(Newsfile Corp. - December 4, 2023) -

Bonterra Resources Inc. (TSXV: BTR)

(OTCQX: BONXF) (FSE: 9BR2)

("

Bonterra

" or the "

Company

") is pleased to announce the first drill

results of its 15,000 meters ("

m

") drill program at its Desmaraisville South project. Three diamond drill

rigs have been mobilized on the project and are currently drill-testing several new geological and

geophysical targets along with historical near surface gold mineralization along the edges of the O'Brien

Syenite Intrusion ("

O'Brien Intrusive

").

Located within three kilometers ("

km

") of the Bachelor Mill Complex, three different areas were drill

tested for their near surface gold potential. These areas are located North, East, and South of the

O'Brien Intrusive (Figure 1).

At the Southern Area ("

South Area

"), several new drill targets were generated from the reinterpretation

of previously intersected gold bearing structures. This reinterpretation was done with the use of the

Bonterra drill hole database and the historical 3D models of high-grade gold intercepts drilled previously.

Bonterra has drilled to date a total of 17 diamond drill holes (4,332 m) at the South Area (Figure 2 and

Table 1).

Highlights include:

10.97 g/t Au over 10.1 m, including 16.36 g/t Au over 4.7 m in hole BRDS-23-018

4.79 g/t Au over 6.3 m, including 9.03 g/t Au over 1.5 m in hole BRDS-23-016

2.65 g/t Au over 4.2 m in hole BRDS-23-016

Marc-André Pelletier, President and CEO, commented: "After entering into an earn-in and joint venture

agreement with Osisko Mining Inc. in the Urban-Barry camp, our Company has redirected its exploration

efforts to focus on our 100%-owned Desmaraisville projects, which is close to where the Bachelor Mill

Complex is situated. The current 15,000 m drill program aims to explore new targets across our land

package and validate our improved geological interpretation. The recent discovery of mineralized zones

at Desmaraisville South supports our current understanding of the gold potential, indicating similarities to

the Bachelor and Moroy deposits on the western side of the O'Brien Intrusive, located about 3 km from

the Bachelor Mill. The ongoing drill program with three rigs, set to conclude this year, should provide

valuable insights that will guide our future exploration strategy. It is to be noted that the nearby Bachelor

Mine historically produced over 350,000 ounces of gold from two million tonnes at a grade of 5.0 g/t Au."

The drilling encountered several sub-parallel hematite and silica rich altered zones with trace to 8% fine

grained and disseminated pyrite which host the gold mineralization (Table 2 and Figure 2). From hole to

hole, these mineralized zones show various orientations and suggest that the gold mineralization is

related to a large complex with brittle zones of various orientations and plunges. Many assays are still

pending from the 3,955 submitted samples.

Bonterra's review of the historical database demonstrated a lack of systematic sampling. Several gold

mineralized intervals were not sampled above and below the mineralization. Bonterra will conduct a re-

sampling program in early 2024. When all analytical data is received, Bonterra will update its 3D model

including the geology, alteration, structures, and mineralization to better understand and evaluate the

near surface gold potential of the South Area.

Table 1: Drill Hole Locations - Desmaraisville South project, Quebec

Hole ID

Easting

Northing

Elevation (m)

Azimuth

Dip

Length (m)

BRDS-23-016

417108

5482618

330

360

-45

366.0

BRDS-23-017

417378

5482627

336

350

-45

339.0

BRDS-23-018

417339

5482660

328

350

-45

297.0

BRDS-23-033

417000

5482762

330

170

-45

156.0

UTM Coordinates, System: NAD83 Zone 18

Table 2: Significant Mineralized Intersections from Drilling on the Desmaraisville South project,

South Area

Hole ID

From

(m)

To

(m)

Length

(m)

Grades

(g/t Au)

Metal Factor

(Length x Grade)

BRDS-23-016

36.80

43.10

6.3

4.79

30.2

BRDS-23-016

including

38.70

40.20

1.5

9.03

13.5

BRDS-23-016

and

51.80

56.00

4.2

2.65

11.1

BRDS-23-017

144.6

151.7

7.1

0.83

5.9

BRDS-23-018

88.00

98.10

10.1

10.97

110.8

BRDS-23-018

including

93.40

98.10

4.7

16.36

76.9

BRDS-23-033

21.40

32.00

10.6

0.59

6.3

1

.

The meterage represents the length of the drilled lengths.

2

.

The mineralized intervals shown above use a 0.5 g/t Au cut-off grade.

3

.

Gold results obtained above <0.5 g/t Au and with a Metal Factor above 5.

Figure 1 - Plan View of the O'Brien Intrusive with Areas of Drilling

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

https://images.newsfilecorp.com/files/1528/189676_a4f6232294f8aa87_001full.jpg

Figure 2 - Plan View of the South Area of the O'Brien Intrusive with Best Results

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

https://images.newsfilecorp.com/files/1528/189676_a4f6232294f8aa87_002full.jpg

Quality Control and Reporting Protocols

The Desmaraisville project's drill core gold analyses are performed at Activation Laboratories (Actlabs)

located in Ste-Germaine-Boulé and Val d'Or, Quebec and at the Agat Laboratory in Val d'Or. The

external laboratory employs a rigorous QA-QC analysis program that meets industry standards. The

analyses are carried out by fire assay (A.A.) with atomic absorption finish and with gravimetric finish for

assay above 10 g/t Au at both Actlabs and Agat. Blanks, duplicates, and certified reference standards

are inserted into the sample stream to monitor the Laboratory's performance. The Company's QA-QC

program requires that at least 5 to 10% of the samples be analyzed by an independent laboratory. These

verification samples are sent to ALS Minerals laboratory facility located in Val-d'Or, Quebec. The

verifications show a high degree of correlation with the Laboratory's results. For the South Area, a total

of 3,955 drill core samples and 702 QA-QC samples, have been sent to Activation Laboratories Ltd and

Agat Laboratory.

Qualified Person

M. Donald Trudel, P.Geo. (OGQ # 813), Director Geology for the Company, oversees all exploration

activities on the Desmaraisville South Project and has compiled and approved the information contained

in this press release.

About Bonterra Resources Inc.

Bonterra is a Canadian gold exploration company with a portfolio of advanced exploration assets

anchored by a central milling facility in Quebec, Canada. The Company's assets include the Gladiator,

Barry, Moroy, and Bachelor gold deposits, which collectively hold 1.24 million ounces in Measured and

Indicated categories and 1.78 million ounces in the Inferred category.

In November 2023, the Company entered into a earn-in and joint venture agreement with Osisko Mining

Inc. for the Urban-Barry properties, which include the Gladiator and Barry deposits. Over the next three

years, Osisko can earn a 70% interest by incurring $30 million in work expenditures. This strategic

transaction highlights Bonterra's dedication to advancing its exploration assets, marking a significant

step towards development.

FOR ADDITIONAL INFORMATION

Marc-André Pelletier, President & CEO

[email protected]

2872 Sullivan Road, Suite 2, Val d'Or, Quebec J9P 0B9

819-279-9304 | Website:

www.btrgold.com

Neither 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 release.

Caution regarding forward-looking statements

This press release contains "forward-looking information" that is based on Bonterra's current

expectations, estimates, forecasts, and projections. This forward-looking information includes, among

other things, statements with respect to the earn-in and joint venture agreement with Osisko Mining

announced on November 28, 2023. The words "will," "anticipated," "plans" or other similar words and

phrases are intended to identify forward-looking information. This forward-looking information includes

namely information with respect to the planned exploration programs and the potential growth in mineral

resources. Exploration results that include drill results on wide spacings may not be indicative of the

occurrence of a mineral deposit and such results do not provide assurance that further work will establish

sufficient grade, continuity, metallurgical characteristics, and economic potential to be classed as a

category of mineral resource. The potential quantities and grades of drilling targets are conceptual in

nature and, there has been insufficient exploration to define a mineral resource, and it is uncertain if

further exploration will result in the targets being delineated as mineral resources. Forward-looking

information is subject to known and unknown risks, uncertainties and other factors that may cause

Bonterra's actual results, level of activity, performance, or achievements to be materially different from

those expressed or implied by such forward-looking information. Such factors include but are not limited

to: uncertainties related exploration and development; the ability to raise sufficient capital to fund

exploration and development; changes in economic conditions or financial markets, environmental and

other judicial, regulatory, political, and competitive developments; technological or operational difficulties

or inability to obtain permits encountered in connection with exploration activities; and labour relations

matters. This list is not exhaustive of the factors that may affect our forward-looking information. These

and other factors should be considered carefully, and readers should not place undue reliance on such

forward-looking information.

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

https://www.newsfilecorp.com/release/189676