Appia Announces Excellent Desorption Results From Target IV Ionic Adsorption Clay Rare Earth Mineralization in Brazil

**Toronto, Ontario—July 17, 2024—**Appia Rare Earths & Uranium Corp. (CSE: API) (OTCQX: APAAF) (FSE: A0I0) announced the latest desorption test results for rare earth elements (REE) from the Target IV Ionic Adsorption Clay (IAC) deposit at the PCH project in Goias, Brazil. A total of 182 samples from 17 Reverse Circulation (RC) drillholes were sent to ALS Laboratories in Lima, Peru. Results consistently confirmed the REE IAC mineralization style on the majority of Target IV, showing improved recoveries of Magnet Rare Earth Oxides (MREO) and Heavy Rare Earth Oxides (HREO).

Stephen Burega, President, stated, “The significant size of the mineralized area, high grades, good recoveries, and rapid desorption confirm the attractiveness of the deposit as a potential world-class project. Each batch of desorption tests helps us better understand the IAC mineralization at the PCH project, and we are excited by the increased recovery rates.”

## Desorption Results Highlights

High Recoveries from RC Drillholes

Discrete desorption interval samples from RC drillholes on Ipora Granite lithology showed high recoveries:

– 47.72% TREO on drillhole PCH-RC-029 from 5 to 6 meters.
– 67.18% HREO on drillhole PCH-RC-045 from 6 to 7 meters.
– 58.85% Dy+Tb on drillhole PCH-RC-049 from 3 to 4 meters.
– 81.67% Nd+Pr on drillhole PCH-RC-034 from 3 to 4 meters.

Significant Desorption Intercepts

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

– PCH-RC-034: 8m@32.92% TREO; 49.18% HREO; 57.29% NdPr; 46.22% TbDy from 3m.
– PCH-RC-049: 4m@29.92% TREO; 51.87% HREO; 49.46% NdPr; 46.74% TbDy from 3m.
– PCH-RC-045: 4m@23.09% TREO; 53.77% HREO; 32.47% NdPr; 43.32% TbDy from 4m.
– PCH-RC-048: 5m@25.89% TREO; 39.80% HREO; 48.13% NdPr; 36.58% TbDy from 0m.
– PCH-RC-076: 5m@27.97% TREO; 51.74% HREO; 46.49% NdPr; 45.14% TbDy from 3m.
– PCH-RC-014: 5m@24.91% TREO; 45.64% HREO; 48.36% NdPr; 38.53% TbDy from 0m.

## Methodology and Further Plans

The desorbability tests conducted by ALS used an Ammonium Sulfate solution at 0.5M, pH2, for 20 minutes at room temperature. A comparison of results from ALS and AGS Laboratories in La Serena, Chile, showed high correlation and consistency between the results.

Stephen Burega, added, “Our upcoming work includes ongoing auger drilling and desorption testing on four newly identified targets, covering over 2,500 hectares, and planning for a Preliminary Economic Assessment (PEA) of Target IV and the Buriti Zones.”

Andre Costa, VP Exploration for Brazil, commented, “We achieved a comprehensive desorption testing method covering the full length of drillholes on Ipora Granite, giving us confidence in the IAC mineralization. We expect similar mineralization on the new PCH project targets – Maia, Electra, Taygeta, and Merope.”

## QAQC and Analysis

Reverse Circulation (RC) drillholes are vertical and intervals are true thickness. Drill hole materials are sampled at one-meter intervals, resulting in average sample sizes of 10-25 kg. Quartering of material is done using a riffle splitter to obtain representative samples for shipment to ALS laboratories.

Quality control samples, such as blanks, duplicates, and standards (CRM), were included in each batch of samples sent for analysis. ALS conducted all analyses using lithium borate fusion and Inductively Coupled Plasma Mass Spectrometry (ICP-MS), ensuring robust and reliable results.

## About Appia Rare Earths & Uranium Corp.

Appia Rare Earths & Uranium Corp. 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% interest in the PCH Ionic Adsorption Clay Project in Goiás State of Brazil. Appia is also focusing on high-grade rare earth elements and gallium at the Alces Lake property and exploring for high-grade uranium in the Athabasca Basin. The company holds surface rights to 94,982.39 hectares in Saskatchewan and has a 100% interest in 13,008 hectares in the Elliot Lake Camp, Ontario.

Appia has 136.8 million common shares outstanding and 145.5 million shares fully diluted.

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