Mr. Tom Drivas reports

APPIA CONFIRMS OUTSTANDING DESORPTION RESULTS FROM ITS IONIC ADSORPTION CLAY TARGETS MAIA, ELECTRA, TAYGETA AND MEROPE IN GOIAS, BRAZIL

Appia Rare Earths & Uranium Corp. today released the initial desorption test results from the ionic adsorption clay (IAC) rare-earth elements (REE) targets Maia, Electra, Taygeta and Merope at the PCH project. A total of 89 samples from 13 auger drill holes were sent to ALS Laboratories in Lima, Peru (ALS), and the results consistently confirmed the REE IAC mineralization style on all targets developed over the Ipora granite. The results show very good recoveries of magnet rare-earth oxides (MREO) and heavy rare-earth oxides (HREO).

Stephen Burega, president, said: "The four new targets are showing higher levels of heavy rare earths as we continue to explore to the east of the property, with excellent Dy and Tb recovery values at Merope and Taygeta targets, representing a significant increase in desorption levels. These are important results that demonstrate further that we have discovered a notable ionic clay rare-earths deposit. Our project has many superior characteristics including its hosting in easy to dig clays, a desirable diversity of metals including the 'rare' rare earths, the high grades encountered and the large scope of the project. Industry has a growing need for rare earths in a stable and western jurisdiction and we are committed to offer a solution."

Drill crews are working daily in order to expand the IAC mineralization over this significant project area. The company continues to see very favourable kinetics across all of the ALS desorption testing. With these increases in dysprosium (Dy) and terbium (Tb) recoveries, the PCH project continues to demonstrate its potential as a future source for these extremely important minerals for the permanent magnet industry.

Highlights

Discrete desorption interval samples from auger drill holes located on Ipora granite lithology returned recoveries up to:

• 72 per cent TREO on auger drill hole PCH-AH-202 from three to four metres;
• 82 per cent HREO on auger drill hole PCH-AH-202 from three to four metres;
• 84 per cent Dy plus Tb on auger drill hole PCH-AH-190 from four to five metres;
• 82 per cent Nd plus Pr on auger drill hole PCH-AH-207 from three to four metres.

The most significant recovered desorption intercepts for the main mineralized zone were:

• PCH-AH-202 five m at 59 per cent TREO; 63 per cent HREO; 85 per cent NdPr; 72 per cent TbDy from three m;
• PCH-AH-204 four m at 54 per cent TREO; 59 per cent HREO; 71 per cent NdPr; 56 per cent TbDy from two m;
• PCH-AH-190 four m at 47 per cent TREO; 47 per cent HREO; 61 per cent NdPr; 55 per cent TbDy from one m;
• PCH-AH-194 three m at 40 per cent TREO; 38 per cent HREO; 68 per cent NdPr; 36 per cent TbDy from three m;
• PCH-AH-097 four m at 34 per cent TREO; 46 per cent HREO; 55 per cent NdPr; 48 per cent TbDy from two m;
• PCH-AH-036 seven m at 37 per cent TREO; 44 per cent HREO; 63 per cent NdPr; 47 per cent TbDy from three m.

The results of the main mineralized zone and from the full auger drill hole length from all tested drill holes are presented in Table 1. The auger hole coordinates are presented in Table 2.

Desorbability tests were conducted by ALS using an ammonium sulphate solution at 0.5M, pH2, for 20 minutes at room temperature.

Andre Costa, vice-president of exploration for Brazil, commented: "These exciting results confirm the potential for REE ionic desorption clay mineralization on all tested new targets. All of them over the Ipora granite. We are on the right path in characterizing the Maia, Electra, Taygeta and Merope targets in the PCH project and we will continue to focus drilling on these new targets to determine recoverability and delineate their extension since they remain open on all directions."

On March 1, 2024, the company announced its maiden mineral resource estimate (MRE) on Target IV and the Buriti zone, and the companion National Instrument 43-101 technical report on the PCH project was filed on April 16, 2024.

QA/QC (quality assurance/quality control)

Auger drill holes are vertical and reported intervals are true thickness. The material produced from auger holes are sampled at one-metre intervals, resulting in average sample sizes of five to 10 kilograms. Quartering of the material was performed at Appia's logging facility using a riffle splitter and continued splitting until a representative sample weighing approximately 500 g each was obtained, bagged in a resistant plastic bag, labelled, photographed and stored for shipment.

The bagged samples are sent to the ALS laboratory in Goiania, Goias, for initial preparation and sent to Lima, Peru, for final analysis. In addition to the internal QA/QC of the ALS Lab, Appia includes its own control samples in each batch of samples sent to the laboratory.

Quality control samples, such as blanks, duplicates and standards (CRM) were inserted into each analytical run. For all analysis methods, the minimum number of QA/QC samples is two standard, one duplicate and one blank, introduced in each batch which comprises full-length hole(s). The rigorous procedures are implemented during the sample collection, preparation and analytical stages to insure the robustness and reliability of the analytical results.

All analytical results reported herein have passed internal QA/QC review and compilation. All assay results of RC samples were provided by ALS, a certified laboratory, which performed their measure of the concentration of rare-earth elements (REE) with the ME-MS81 analytical method that uses lithium borate fusion prior acid dissolution and inductively coupled plasma mass spectrometry (ICP-MS). Major element oxides were done using ME_ICP06 analytical method using lithium borate fusion and inductively coupled plasma atomic emission spectroscopy (ICP-AES). Desorption analysis with ME-MS19 analytical method with samples being leached with a solution of ammonium sulphate at 0.5 molar, pH 2, room temperature for 20 minutes. The leached solution content was analyzed using ICP-AES/ICP-MS.

The technical information in this news release, including the information related to geology, drilling and mineralization, has been reviewed and approved by Andre L. L. Costa, Appia's VP, exploration, for Brazil, with more than 29 years of relevant experience. Mr. Costa is a APEGS professional geoscientist (PGeo) and a fellow of Australian Institute of Geoscientists (FAIG), a qualified person (QP) as defined by National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.

About Appia Rare Earths & Uranium Corp. (Appia)

Appia is a publicly traded Canadian company in the rare earth element and uranium sectors. The company holds the right to acquire up to a 70-per-cent interest in the PCH ionic adsorption clay project (see the June 9, 2023, news release), which is 40,963.18 hectares in size and located within the Goias state of Brazil (see the Jan. 11, 2024, news release). The company is also focusing on delineating high-grade critical rare earth elements and gallium on the Alces Lake property, and exploring for high-grade uranium in the prolific Athabasca basin on its Otherside, Loranger, North Wollaston and Eastside properties. The company holds the surface rights to exploration for 94,982.39 hectares (234,706.59 acres) in Saskatchewan. The company also has a 100-per-cent interest in 13,008 hectares (32,143 acres), with rare earth elements and uranium deposits over five mineralized zones in the Elliot Lake camp in Ontario.

Appia has 136.8 million common shares outstanding (145.5 million shares fully diluted).

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