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C3 Metals Intersects 280m at 0.43% Copper and 0.24 g/t Gold (0.60% CuEq1) Within 391m of Porphyry Copper-Gold Mineralization; Broadest Mineralized Interval Ever Reported at Bellas Gate, Jamaica

Drill Results

C3 Metals Intersects 280m at 0.43% Copper

and 0.24 g/t Gold (0.60% CuEq1) Within 391m

of Porphyry Copper-Gold Mineralization;

Broadest Mineralized Interval Ever Reported at

Bellas Gate, Jamaica

Toronto, Ontario--(Newsfile Corp. - September 25, 2023) -

C3 Metals Inc.

(TSXV: CCCM) (OTCQB:

CUAUF) ("C3 Metals" or the "Company") is pleased to announce it has received assays for the final

130.7m of drill hole PVT0900-002.

Assays for the first 350.0m were reported on September 12, 2023.

Drill hole PVT0900-002 intersected 390.7m at 0.37% copper and 0.19 g/t gold (0.50% CuEq

1

) from

64.1m, including 279.5m at 0.43% copper and 0.24 g/t gold (0.60% CuEq

1

).

This is the broadest interval

of copper-gold mineralization reported to date at the Company's 100% owned Bellas Gate project in

Jamaica.

Ongoing drilling will continue evaluating a cluster of discrete high priority porphyry copper-gold targets.

C3 Metals is drill testing both the strike and depth potential of these porphyry targets with two goals:

adding potential near-surface mineralized material tonnage and locating the bornite-rich potassic altered

higher-grade core found in most economic porphyry systems.

These targets are defined by coincident

alteration, geochemistry and geophysics anomalies along the two parallel Camel and Connors porphyry

belts at the Bellas Gate project (Figure 1).

Approximately 2,500m of a fully funded 8,500m drill program

has been completed to date.

Drilling Highlights

Longest interval of copper-gold mineralization ever intersected at the Bellas Gate project.

390.7m at 0.37% copper and 0.19 g/t gold (0.50% CuEq

1

) from 64.1m, including 279.5m at

0.43% copper and 0.24 g/t gold (0.60% CuEq

1

) intersected in drill hole PVT0900-002.

PVT0900-002 terminated in highly altered diorite and andesite cut by pyrite - magnetite ±

chalcopyrite ± molybdenite in veins, with an intense anhydrite overprint.

Drill holes PVT0900-003 (418.6m) and CMH8350-001 (662.0m) completed - assays

pending.

Two additional drill holes are well advanced.

Multi-phase system - Porphyry style alteration and mineralization is overprinted or

telescoped by intermediate and high-sulphidation epithermal copper-gold mineralization.

Dan Symons, President and CEO, stated

, "Over the last 10 months we have systematically mapped

approximately 12,000 hectares of our 20,700-hectare mineral concession package in Jamaica in

order to develop a comprehensive model and 3D understanding of the geology at Bellas Gate.

The

fact that we have intersected the broadest interval of copper-gold mineralization ever in the history of

the project in only the second hole of the ongoing drill program speaks to the quality of work

performed by our geology team.

"We will continue to evaluate both the strike and depth extent of the multiple porphyry clusters

discovered along the Camel and Connors belts, which we suspect may converge at depth into a larger

hydrothermal system.

We expect to have a steady flow of assay results to report from the ongoing

8,500m drill program into 2024.

Continued positive results will see us move to extending the program.

With copper sulphide mineralization visually present in the first six holes of the program, we believe

we are at the beginning of a significant copper-gold discovery in Jamaica."

Figure 1: C3 Metals' Bellas Gate project location map showing reinterpreted geology and high priority

copper-gold porphyry and epithermal prospects along two porphyry and epithermal copper-gold belts.

Note the locations of two drill rigs currently operating at the Provost and Camel Hill porphyry targets.

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

https://images.newsfilecorp.com/files/2661/181656_889e0ab274b7091a_001full.jpg

Figure 2:

Plan view map of the Provost porphyry target showing the collar and trace of planned and

conditional drill holes (red), completed and in-progress 2023 drill holes (blue) and historical drill holes

(black).

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

https://images.newsfilecorp.com/files/2661/181656_889e0ab274b7091a_002full.jpg

Drilling at the Provost porphyry target confirms a telescoped, almost fully intact, and non-eroded porphyry

copper-gold system. This system is interpreted to be spatially associated with a larger porphyry system

at depth, as illustrated in cross section (Figure 3).

Mineralization comprises chalcopyrite and pyrite in

strongly phyllic to potassic altered diorite and andesite volcaniclastics (Figure 4).

Table 1 summarizes

significant drill intersections.

Pervasive anhydrite alteration is observed at approximately 400m depth, as

veins and infill, locally associated with chalcopyrite mineralization.

The presence of strong anhydrite

alteration and the multi-phase overprinting of epithermal veins telescoped onto an existing porphyry are

positive indicators.

Drill results continue to support the interpretation of a well-developed and fertile

hydrothermal system. C3 Metals will continue to explore for bornite-rich copper mineralization that is

commonly central to most porphyry systems.

Table 1

. Significant intercepts from the Provost porphyry target at Bellas Gate Project

Hole

From

(m)

To

(m)

Length

2

(m)

Cu

(%)

Au

(g/t)

Ag

(g/t)

CuEq

1

(%)

PVT0900-002

64.10

454.80

390.70

0.37

0.19

1.72

0.50

Includes

158.50

438.00

279.50

0.43

0.24

2.09

0.60

1

Copper equivalent (CuEq) calculation is for reporting purposes only and was determined based on CuEq (%) = Cu (%) + ((0.7079 × Au g/t) under

metal price assumptions of Copper - US$3.00/lb, Gold - US$1,800/oz.

As the Bellas Gate project is an early-stage exploration project and there is

insufficient metallurgical data to allow for estimation of recoveries, porphyry copper-gold recoveries are estimated based on multiple comparable

porphyry-style copper-gold deposits (Alumbrera, Batu Hijau, Fish Lake, Mt Milligan, El Pachon, Agua Rica, Cerro Cassle and Skouries) which

averaged 90% recovery for copper and 73% for gold.

A nominal cut-off of 0.2% CuEq is used for the reporting of potentially significant intercepts

and higher-grade cut-offs are 0.4% CuEq.

Maximum contiguous dilution within each intercept is 10m for 0.2% and 0.4% CuEq.

Samples have been

composited to two and maximum three metre lengths.

2

All intervals are reported as core lengths, as true widths of the mineralized intervals are unknown at this time.

Figure 3: Cross section through PVT0900-002. Completed drill hole traces in blue, historical drill holes in

black and planned drill holes in red.

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

https://images.newsfilecorp.com/files/2661/181656_889e0ab274b7091a_003full.jpg

Figure 4:

(Top Left) PVT0900-002 Straight porphyry B-veins with chalcopyrite-centerline infill at 355.0m.

The 3.0m sample assayed 0.32% copper and 0.17g/t gold (0.44% CuEq

1

). (Top Right) PVT0900-002

with sheeted and crosscutting porphyry B-veins in strongly altered diorite at 400.4m. The 3.0m sample

assayed 0.46% copper and 0.32g/t gold (0.69% CuEq

1

).

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

https://images.newsfilecorp.com/files/2661/181656_figure4.jpg

Next Steps

Recent and historical drilling at Provost confirms porphyry and epithermal copper-gold mineralization is

open in most directions.

C3 Metals owns a man-portable drill rig that is currently stepping out along

strike and at depth at Provost.

Based on surface geologic mapping, historical and recent drilling results,

the Provost porphyry target currently measures 1,500m in length, averages 350m in width, and has a

confirmed depth extent of at least 400m.

Planned drilling at Provost is designed to systematically test

along strike of this coincident geology, geophysics and geochemical anomaly.

The larger capacity contract drill rig is currently drilling approximately 3.5km southeast of Provost at the

Camel Hill porphyry target.

The Camel Hill porphyry target currently measures 1,800m in length and

1,000m in width and is defined by a coincident geology, geophysics and geochemical anomaly.

The first

hole was planned to a depth of 450m but was extended to 662m due to the presence of strong pyrite,

lesser chalcopyrite and favorable porphyry-style alteration below the original target depth (assays

pending).

A second hole is currently in progress with a target depth of approximately 500m.

These holes

provide structural, geochemical, alteration and mineralization data to aid in targeting the bornite-rich

potassic altered core found in most economic porphyry systems.

Four deep holes (700m - 1,000m) are

currently planned along the Camel and Connors porphyry belts.

The Company looks forward to providing further updates as drilling progresses and anticipates a steady

flow of assay results.

For additional information, contact:

Dan Symons

President and CEO

+1 416 716 6466

[email protected]

ABOUT C3 METALS INC.

C3 Metals Inc. is a mineral exploration company focused on creating substantive value for its

shareholders through the discovery and development of large copper and gold deposits.

The Company

is actively exploring in Jamaica where it has identified 16 porphyry and 40 epithermal prospects over a

30km strike extent across its 20,700 hectare exploration licences package.

Mining is currently the

second largest industry in Jamaica, and historical mining dates back to the colonial eras of the 1500s

(Spanish) and 1800s (British).

The Company also holds approximately 24,000 hectares located in the

prolific high-grade Andahuaylas-Yauri Porphyry-Skarn belt of Southern Peru.

Mineralization at

Jasperoide is hosted in a similar geological setting to the nearby major mining operations at Las

Bambas (MMG), Constancia (Hudbay) and Antapaccay (Glencore).

At Jasperoide, the Company has

identified over 15 skarn prospects and an outcropping porphyry system over two parallel 28km belts.

The Company has published a maiden resource estimate on the first of these skarn targets, which

contained Measured & Indicated Resources of 52Mt at 0.5% copper and 0.2 g/t gold.

Related Link:

www.c3metals.com

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

release.

QP Statement

Stephen Hughes, P.Geo. is Vice President Exploration and a Director for C3 Metals and is a Qualified

Person as defined by National Instrument 43-101.

Mr. Hughes has reviewed the technical information in

this news release and approves the written disclosure contained herein.

Technical Program

C3 Metals adheres to a strict QA/QC protocol for handling, sampling, sample transportation and

analyses.

Chain-of-custody protocols are designed to ensure security of samples until their delivery at

the laboratory.

Samples were cut at C3 Metals' operations base in Bellas Gate, St Catherine, Jamaica by Company

personnel. Diamond drill core was sampled in maximum 3-metre intervals, stopping at geological

boundaries, and using a rock saw.

Core diameter is a mix of HQ3 and NQ3 depending on the depth of

the drill hole.

Samples were bagged, tagged and packaged for shipment by DHL air freight service to

the ALS preparation laboratory in Sudbury, Ontario, Canada where entire samples were crushed to 70%

passing 10 mesh (2mm), and a 250g split was pulverized to 85% passing 200 mesh (75µm).

The prepared samples were sent to the ALS assay laboratories in Vancouver, Canada for copper, gold

and silver assays, and multi-element ICP. ALS is an accredited laboratory which is independent of the

Company. Gold assays were by fire assay fusion with AAS finish on a 30g sample and the overlimit gold

assay was completed by fire assay and gravimetric finish on 30g sample.

Copper and silver were

assayed by ICP-AES following a 4-acid digestion on the ME-ICP61 package for a suite of 33 elements

and the over limit copper by 4-Acid digestion and assayed by ICP-AES on each sample with copper

greater than 10000ppm (1%). Copper and gold standards as well as blanks and duplicates (coarse

crush split) were randomly inserted into the sampling sequence for quality control. On average, 9% of the

submitted samples are quality control samples. No data quality problems were indicated by the QA/QC

program.

1

Copper equivalent (CuEq) calculation is for reporting purposes only and was determined based on CuEq (%) = Cu (%) + ((0.7079 × Au g/t) under

metal price assumptions of Copper - US$3.00/lb, Gold - US$1,800/oz.

As the Bellas Gate project is an early-stage exploration project and there is

insufficient metallurgical data to allow for estimation of recoveries, porphyry copper-gold recoveries are estimated based on multiple comparable

porphyry-style copper-gold deposits (Alumbrera, Batu Hijau, Fish Lake, Mt Milligan, El Pachon, Agua Rica, Cerro Cassle and Skouries) which

averaged 90% recovery for copper and 73% for gold.

A nominal cut-off of 0.2% CuEq is used for the reporting of potentially significant intercepts

and higher-grade cut-offs are 0.4% CuEq.

Maximum contiguous dilution within each intercept is 10m for 0.2% and 0.4% CuEq.

Samples have been

composited to two and maximum three metre lengths.

Caution Regarding Forward-Looking Statements

Certain statements contained in this press release constitute forward-looking information. These

statements relate to future events or future performance. The use of any of the words "could", "intend",

"expect", "believe", "will", "projected", "estimated" and similar expressions and statements relating to

matters that are not historical facts are intended to identify forward-looking information and are based on

the Company's current belief or assumptions as to the outcome and timing of such future events. Actual

future results may differ materially. In particular, this release contains forward-looking information relating

to, among other things, the exploration operations of the Company and the timing which could be

affected by the current global COVID-19 pandemic. Those assumptions and factors are based on

information currently available to the Company.

Although such statements are based on reasonable

assumptions of the Company's management, there can be no assurance that any conclusions or

forecasts will prove to be accurate.

While the Company considers these assumptions to be reasonable based on information currently

available, they may prove to be incorrect. Forward-looking information involves known and unknown

risks, uncertainties and other factors which may cause the actual results, performance or achievements

to be materially different from any future results, performance or achievements expressed or implied by

the forward-looking information. Such factors include risks inherent in the exploration and development of

mineral deposits, including risks relating to changes in project parameters as plans continue to be

redefined, risks relating to variations in grade or recovery rates, risks relating to changes in mineral

prices and the worldwide demand for and supply of minerals, risks related to increased competition and

current global financial conditions and the COVID-19 pandemic, access and supply risks, reliance on

key personnel, operational risks, and regulatory risks, including risks relating to the acquisition of the

necessary licenses and permits, financing, capitalization and liquidity risks.

The forward-looking information contained in this release is made as of the date hereof, and the

Company is not obligated to update or revise any forward-looking information, whether as a result of new

information, future events or otherwise, except as required by applicable securities laws. Because of the

risks, uncertainties and assumptions contained herein, investors should not place undue reliance on

forward-looking information. The foregoing statements expressly qualify any forward-looking information

contained herein.

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

https://www.newsfilecorp.com/release/181656