First Phosphate Reports Published Research Studies for its Lac à l’Orignal, Mirepoix and Bégin-Lamarche Properties in the Saguenay-Lac-St-Jean region of Quebec, Canada

Saguenay, Quebec – March 26, 2024 – First Phosphate Corp. (“First Phosphate” or the “Company”) (CSE: PHOS) (OTC: FRSPF) (FSE: KD0) is pleased to announce that two peer-reviewed publications in scientific journals and one research report have been published on its phosphate properties at Lac à l’Orignal, Mirepoix and Bégin-Lamarche in the Saguenay-Lac-St-Jean region of Quebec.

“These publications are important because they serve to provide the scientific and industrial community with an understanding of the geological set up of these high purity phosphate layers for the potential expansion of this resource to the benefit of the phosphate and lithium iron phosphate (“LFP”) battery industry worldwide,” says CEO John Passalacqua. “High purity Quebec igneous phosphate rock as is found in the Company’s properties is believed to be able produce a large quantity of purified phosphoric acid (“PPA”) to serve North America’s electrification requirements.”

The three published studies can be found at:

Quebec Anorthosite

1. Petrogenesis of oxide-apatite mineralization associated with Proterozoic anorthosite massifs at Lac Mirepoix, Quebec, Canada: A multi-injection model for Fe-Ti-P mineralization in the Central Grenville Province

1Pedro Miloski, 1Sarah Dare, 2Caroline-Emmanuelle Morisset, 3Morgann G. Perrot, 3Joshua H.F.L. Davies. 1Département des Sciences Appliquées, Université du Québec à Chicoutimi (UQAC); 2Agence Spatiale Canadienne; 3Département des Sciences de la Terre et de l’Atmosphère/GEOTOP, Université du Québec à Montréal (UQAM) Published in Ore Geology Reviews as part of a PhD thesis. December 2023

2. Petrogenesis of Fe‑Ti‑P mineral deposits associated with Proterozoic anorthosite massifs in the Grenville Province: insights from oxide and apatite trace‑element geochemistry at Lac à l’Orignal, Quebec, Canada

1Pedro Miloski, 1Sarah Dare, 2Caroline‑Emmanuelle Morisset, 3Joshua H. F. L. Davies, 3Morgann G. Perrot, 1Dany Savard. 1Département des Sciences Appliquées, Université du Québec à Chicoutimi (UQAC); 2Agence Spatiale Canadienne; 3Département des Sciences de la Terre et de l’Atmosphère/GEOTOP, Université du Québec à Montréal (UQAM) Published in Mineralium Deposita as part of a PhD thesis. December 2023

3. Cl contents of phosphatic layers in First Phosphate’s Bégin-Lamarche property, Quebec, Canada
Dr. Sandeep Banerjee, Queen’s University, Ontario, Canada November 10, 2023

Details on First Phosphate’s assets in the Saguenay-Lac-St-Jean region of Quebec, can be found at: https://firstphosphate.com/projects/prized-assets

Details on First Phosphate’s pilot plant for the purification of Quebec igneous anorthosite can be found at: https://firstphosphate.com/projects/pilot-plant

Details on First Phosphate’s pilot plant for the manufacture of PPA from Quebec igneous phosphate can be found at: https://firstphosphate.com/projects/ppa-production

Details on First Phosphate’s strategy for the creation of a fully integrated LFP battery supply chain in North America based on establishing an LFP battery valley in the Saguenay-Lac-St-Jean region of Quebec can be found at: https://firstphosphate.com/lfp-battery-strategy

First Phosphate believes that Quebec igneous anorthosite phosphate rock is an untapped source of high purity phosphate which can potentially be mined and transformed into large quantities of PPA to service North America’s need for LFP batteries.

About First Phosphate Corp.

First Phosphate is a mineral development company fully dedicated to extracting and purifying phosphate for the production of cathode active material for the LFP battery industry. First Phosphate is committed to producing at high purity level, in responsible manner and with low anticipated carbon footprint. First Phosphate plans to vertically integrate from mine source directly into the supply chains of major North American LFP battery producers that require battery grade LFP cathode active material emanating from a consistent and secure supply source. First Phosphate holds over 1,500 sq. km of royalty-free district-scale land claims in the Saguenay–Lac-St-Jean Region of Quebec, Canada that it is actively developing. First Phosphate properties consist of rare anorthosite igneous phosphate rock that generally yields high purity phosphate material devoid of high concentrations of harmful elements.

For additional information, please contact:

Bennett Kurtz, CFO

bennett@firstphosphate.com

Tel:  +1 (416) 200-0657

Investor Relations: investor@firstphosphate.com

Media Relations: media@firstphosphate.com

Website: www.FirstPhosphate.com

Follow First Phosphate:

Twitter: twitter.com/FirstPhosphate

LinkedIn: linkedin.com/company/first-phosphate

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