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Midland IN Partnership with RIO Tinto Identifies New Spodumene- Bearing Pegmatites ON Galinée Project

Exploration Programs Partnerships & JV

MIDLAND IN PARTNERSHIP WITH RIO TINTO IDENTIFIES NEW SPODUMENE-

BEARING PEGMATITES ON GALINÉE PROJECT

Montreal, September 19, 2023. Midland Exploration Inc. (“Midland”) (TSX-V: MD), in partnership

with Rio Tinto Exploration Canada Inc. (“RTEC”), is pleased to report the identification of a series of

spodumene-bearing pegmatite dykes on the Galinée project, approxima tely 8 kilometres east of the

Adina lithium deposit held by Winsome Resources (“Winsome”). The Galinée project is currently

wholly owned by Midland and is subject to an option agreement signed with RTEC in June 2023 (see

press release by Midland dated June 14, 2023). Field crews began working on Galinée near the end of

August, following the complete lift of access restrictions in the James Bay region as a result of forest

fires in the summer of 2023.

Highlights:

• Discovery of spodumene-bearing pegmatite dykes 8 km east of Winsome’s Adina project;

• Spodumene-bearing pegmatites identified over several hundred of metres;

• Prospecting underway and drilling to come in 2023.

Over a distance of several hundred of metres, spodumene-bearing pegmatites over several metres wide

were identified on several outcrops by field crews after a few days of prospecting. A combination of

ultraviolet (UV) lamp and a LIBS (Laser-Induced Breakdown Spectroscopy) analyzer were used to

identify spodumene . Laboratory assay results are pending . Field crews continu e to determine the

lateral extent and the geometry of these spodumene-bearing pegmatites.

The Galinée project is located approximately 4 kilo metres due east of the Adina showing held by

Winsome. This showing is located at th e contact between amphibolites of the Trieste Formation to the

south and f elsic int rusives to the north. This contact is marked by a major structure that likely

controlled the emplacement of pegmatites at the Adina showing. This new discovery, on Galinée, of

spodumene-bearing pegmatite dykes was made along the same highly favourable contact zone, which

is present on the property over more than 7 kilometres, and which has never been explored for lithium

in the past. This first exploration program includes prospecting, geological mapping as well as a high -

resolution LiDAR survey.

Prospecting work on Galinée continues in preparation for a maiden drilling campaign to c ome later in

2023. Exploration works continue also on Chisaayuu, Corvette and Mythril East blocks.

Cautionary statements

Grab samples are selective by nature and may not be representative of mineralized zones.

Lithium mineralization occurring at Winsome’s Adina dep osit is not necessarily indicative of

mineralization that may be encountered on the Galinée project held by Midland.

About Midland

Midland targets the exc ellent mineral p otential of Quebec to make the discovery of new world -class

deposits of gold and critical metals. Midland is proud to count on reputable partners such as R TEC,

BHP Canada Inc., Barrick Gold Corp., Wallbridge Mining Company L td, Probe Gold In c., Agnic o

Eagle Mines Limited, Osisko Developmen t Corp., SOQUEM Inc., Brunswick Explora tion Inc.,

Nunavik Mineral Exploration Fund, Cosmos E xploration Limited and Abcourt Mines Inc. Midland

prefers to work in partnership and inte nds to quickly conc lude a dditional a greements in regard to

newly acquired properties. Management is currently rev iewing other opportunities and projects to

build up Midland’s portfolio and generate shareholder value.

Qualified Person and VP Exploration Mario Masson prepared this press release and verified the

Galinée project data as Midland ’s qualified person (QP) within the meaning o f National Instrument

43-101.

For further information, please consult Midland’s website or contact:

Gino Roger, President and Chief Executive Officer

Tel.: 450 420-5977

Fax: 450 420-5978

Email: [email protected]

Website: https://www.midlandexploration.com/

Neither T SX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange ) accepts responsi bility for the ad equacy or accuracy of this

release.

This press release may contain forward -looking statements that are subject to known and unknown

risks and uncertainties that could cause act ual results to vary materially from targeted results. Such

risks and un certainties i nclude those described in Midland’s periodic reports including the annual

report or in the filings made by Midland from time to time with securities regulatory authorities.

1

Midland – Rio Tinto New Option for Lithium

1

James Bay Li

Deposit (Allkem)

Corvette Li

pegmatites

(Patriot Battery

Metals)

Rose Li

Deposit

Sirmac Li

Deposit

Moblan Li

Deposit

New Li Discovery

Adina

(Winsome)

Mythril East, Chisaayuu & Corvette

• LiDAR completed

• Prospecting in progress

Whabouchi

Li Deposit

(Nemaska) Main Road

Midland

Lithium Occurrences

Midland/Rio Tinto

Option

Tonalitic Unit

Gneiss

Metavolcanic

Metasediment

Granite

Komo

• LiDAR completed

• Prospecting in 2023

Galinée

New Li Discovery

• LiDAR completed

• Prospecting in progress

Moria

Sulu

Picard

Shire

Sulu

Warp

2

James Bay (North) New Lithium Discoveries

2

Tonalitic Unit

Gneiss

Metavolcanic

Metasediment

Granite

Lasalle project

Cosmos Option

Chisaayuu project

Rio Tinto Option

Galinée project

Rio Tinto Option

New Spodumene

Pegmatites Dykes

New Li Discovery

Trieste

(Loyal Lithium)

New Li Discovery

Escale-Mirage

(Brunswick Option)

Mythril East project

(West block)

Rio Tinto Option

Tilly South

100% Midland

Corvette Li pegmatites

(Patriot Battery Metals)

CV5: Inferred 109.2 MT

at 1.42% Li2O New Li Discovery

Adina (Winsome)

Up-to 1.37% Li2O over

61.2m from 8.9m

Mythril project

Brunswick Option

Corvette project

Rio Tinto Option

Mythril East

(East block)

100% Midland

New Li Discovery

Corvette Far East

(Cosmos)

Main Road

Midland

Lithium Occurrences

Midland/Rio Tinto

Option

New Discovery

3

Galinée New Lithium Discovery

3

Tonalitic Unit

Gneiss

Metavolcanic

Metasediment

Granite

New Li Discovery

Trieste

(Loyal Lithium)

New Li Discovery

Adina (Winsome)

Up to 1.37% Li2O over

61.2m from 8.9m

Lithium Occurrences

Midland/Rio Tinto

Option

New Discovery

Galinée project

Rio Tinto Option

New Spodumene

Pegmatites Dykes

4

4

Galinée New Spodemene Pegmatites

5

Galinée New Spodemene Pegmatites

5

6

6

Galinée New Spodemene Pegmatites