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LUN.TO ·

Lundin Mining to Option Ni-Cu-PGM Exploration Properties from Talon Metals Corp.

Mergers & Acquisitions Property Options & Staking

Corporate Office

1055 Dunsmuir Street

Suite 2800, Bentall IV

Vancouver, BC V7X 1L2

Phone +1 604 689 7842

lundinmining.com

NEWS RELEASE

Lundin Mining to Option Ni-Cu-PGM Exploration Properties from Talon Metals Corp.

Vancouver, March 5, 2025 (TSX: LUN; Nasdaq Stockholm: LUMI) Lundin Mining Corporation (“Lundin Mining” or the

“Company”) is pleased to announce today that it has entered into exclusivity to negotiate an earn-in agreement (the “Option

Agreement”) with Talon Metals Corp. (“Talon”) for the right to acquire up to a 70% ownership interest in the Boulderdash

exploration properties (“Boulderdash”) which are adjacent to the Company’s Eagle Mine. Concurrently with the execution

of the exclusivity agreement, Lunding Mining has advanced Talon US$5 million to, among other things, commence drilling

at Boulderdash. If the parties do not execute the Option Agreement, Talon will either repay such advance or issue shares

to the Company with an aggregate subscription price equal to such advance based on the 5-day volume weighted average

price of Talon shares on the TSX at the time of issuance.

It is anticipated that pursuant to the terms of the Option Agreement, Lundin Mining will agree to fund up to 30,000 metres

(m) of Talon's drilling campaign at Boulderdash in exchange for a 44.625% interest in Boulderdash. Such drill campaign will

be completed in 10,000 m tranches at the election of Lundin Mining. Following the completion of 30,000 m of drilling, the

Company may fund a feasibility study in respect of the Boulderdash property in exchange for an additional 25.375% interest

in Boulderdash, for a total ownership of 70%, as well as the potential for a 90% interest in certain properties adjacent to

Boulderdash.

Boulderdash Properties

The Boulderdash target is located approximately 12 kilometres northwest of Lundin Mining’s Eagle Mine in Michigan, the

only operating nickel mine in the U.S. The maiden drill hole at Boulderdash announced last year on October 24, 2024 (see

Talon release “Talon Metals Makes New Copper-Nickel Discovery in Michigan”) intercepted 99.92 m grading 0.41% nickel

and 0.35% copper starting at 9.14 m depth, more recent drilling has intercepted 2.35 m of nickel-copper massive sulphide

mineralization assaying 2.33% nickel and 2.95% copper (press release dated February 27, 2025 “Talon Metals Reports More

Drilling Success and Assays From its Michigan Boulderdash Discovery”). As part of the option agreement Lundin Mining will

fund an initial 10,000 m drill program to follow up on recent drill results.

About Lundin Mining

Lundin Mining is a diversified Canadian base metals mining company with operations or projects in Argentina, Brazil, Chile,

and the United States of America, primarily producing copper, gold and nickel. In December 2024 the Company announced

the sale of its European assets to Boliden. The transaction is expected to close in mid-2025 subject to customary conditions

and regulatory approvals.

The information in this release is subject to the disclosure requirements of Lundin Mining under the Swedish Financial

Instruments Trading Act. The information was submitted for publication, through the agency of the contact persons set out

below on March 5, 2025 at 14:30 Pacific Time.

Technical Information

The scientific and technical information in this press release has been prepared in accordance with the disclosure standards

of National Instrument 43 -101 (“NI 43-101”) and has been reviewed by Cole Moody, PGeo., Director, Resource Geology, a

"Qualified Pe rson" under NI 43 -101. Mr. Moody has verified the data disclosed in this release and no limitations were

imposed on his verification process.

For further information, please contact:

Stephen Williams, Vice President, Investor Relations: +1 604 806 3074

Robert Eriksson, Investor Relations Sweden: +46 8 440 54 50

Cautionary Statement on Forward-Looking Information

Certain of the statements made and information contained herein are “forward -looking information” within the meaning of applicable Canadian securities laws. All

statements other than statements of historical facts included in this document constitute forward-looking information, including but not limited to statements regarding:

the Company’s plans, prospects and business strategy; the earn -in arrangement in respect of the Boulderdash property, including the entering into of an Option

Agreement in respect t hereof and the terms of such Option Agreement; future actions taken by Talon and Lundin Mining in relation to the Boulderdash property and

the outcomes and anticipated benefits thereof; and expectations for other economic, business, and/or competitive factors. Words such as “believe”, “expect”, “anticipate”,

“contemplate”, “target”, “plan”, “goal”, “aim”, “intend”, “continue”, “budget”, “estimate”, “may”, “will”, “can”, “could”, “should”, “schedule” and similar expressions are often,

but not always, used identify forward-looking information.

Forward-looking information is necessarily based upon various estimates and assumptions including, without limitation, the expectatio ns and beliefs of management,

including that the Company and Talon can successfully negotiate and enter into an Option Agreement, as well as the terms of such Option Agreement and the anticipated

benefits of such arrangement ; that the results of exploration activities at Boulderdash will be consistent with management expectations in relation thereto; the ability

of Talon and L undin to identify opportunities at Boulderdash and achieve related goals ; assumed and future price of copper, zinc, nickel, gold and other metals;

anticipated costs; that the political environment in which the Company operate s will continue to support the development and operation of mining projects , including

at Boulderdash; and assumptions related to the factors set forth below. While these factors and assumptions are considered reasonable by Lu ndin Mining as at the

date of this document in light of management’s experience and perception of current conditions and expected developments, these statements are inherently subject to

significant business, economic and competitive uncertainties and contingencies. Known and unknown factors could cause actual results to differ materially from those

projected in the forward -looking information and undue reliance should not be placed on such information. Such factors include, but are not limited to : the failure of

the Company and Lundin to successfully negotiate the terms of an Option Agreement in a timely manner, or at all; the failure of the Company to realize the anticipated

benefits of an Option Agreement; global financial conditions, market volatility and inflation, including pricing and availability of key supplies and services; risks inherent

in mining including but not limited to risks to the environment, industrial accidents, catastrophic equipment fail ures, unusual or unexpected geological formations or

unstable ground conditions, and natural phenomena such as earthquakes, flooding or unusually severe weather; uninsurable risks; volatility and fluctuations in metal

and commodity demand and prices; reputation risks related to negative publicity with respect to the Company , Talon or the mining industry in general; delays or the

inability to obtain, retain or comply with permits; risks relating to the development of the Boulderdash property and the Company's projects; health and safety laws and

regulations; risks associated with climate change; risks relating to indebtedness; economic, political and social instability and mining regime changes, including but not

limited to those related to permitting and approvals, na tionalization or expropriation without fair compensation, environmental and tailings management, labour,

trade relations, and transportation; an inability to attract and retain highly skilled employees; project financing risks; liquidity risks and limited financial resources;

health and safety risks; compliance with environmental and other laws and regulations; unavailable or inaccessible infrastructure ; infrastructure failures, and risks

related to ageing infrastructure; changing taxation or tariff regimes; an inability of the Company to effectively compete in the industry; risks associated with any earn-

in right in respect of the Boulderdash property, including with respect to ability to achieve anticipated benefits thereof and unanticipated difficulties or expenditures

relating to the exploration and development of the Boulderdash property; risks related to mine closure activities, reclamation obligations, environmental liabilities and

closed and historical sites; reliance on key personnel and reporting and oversight systems, as well as third parties and cons ultants; information technology and

cybersecurity risks; risks associated with the estimation of Mineral Resources and Mineral Reserves and the geology, grade an d continuity of mineral deposits including

but not limited to models relating thereto; actual ore mined and/or metal recoveries varying from Mineral Resource and Minera l Reserve estimates, estimates of grade,

tonnage, dilution, mine plans and metallurgical and other characteristics; ore processing efficiency; community and stakeholder opposition; regulatory investigations,

enforcement, sanctions and/or related or other litigation; financial projections, including estimates of future expenditures and cash costs, and estimates of future

production may not be reliable; risks associated with the use of derivatives; environmental and regulatory risks associated w ith the structural stability of waste rock

dumps or tailings storage facilities; exchange rate fluctuations ; compliance with laws; potential for the allegation of fraud and corruption involving the Company, its

customers, suppliers or employees, or the allegation of improper or discriminatory employment practices, or human rights viol ations; risks relating to d ilution; risks

relating to payment of dividends; counterparty and customer concentration risks; activist shareholders and proxy solicitation matters; estimation of asset carrying

values; existence of significant shareholders; challenges or defects in title ; internal controls; risks relating to minor elements contained in concentrate products; the

threat associated with outbreaks of viruses and infectious diseases; mining rates and rehabilitation projects; mill shut downs; and other risks and uncertainties, including

but not limited to those described in the "Risks and Uncertainties” section of the Company’s Annual Information Form for the year ended December 31, 202 4, which is

available on SEDAR+ at www.sedarplus.com under the Company’s profile.

All of the forward-looking information in this document are qualified by these cautionary statements. Although the Company has attempted to identify important factors

that could cause actual results to differ materially from those contained in forward -looking information, there may be other factors that cause results not to be as

anticipated, estimated, forecasted or intended and readers are cautioned that the foregoing list is not exhaustive of all fac tors and assumptions which may have been

used. Should one or more of these risks and uncertainties materialize, or should underlyin g assumptions prove incorrect, actual results may vary materially from those

described in forward -looking information. Accordingly, there can be no assurance that forward -looking information will prove to be accurate and forward -looking

information is not a guarantee of future performance. Readers are advised not to place undue reliance on forward-looking information. The forward-looking information

contained herein speaks only as of the date of this document. The Company disclaims any intention or obligati on to update or revise forward‐looking information or to

explain any material difference between such and subsequent actual events, except as required by applicable law .