Additional Metallurgical Test Results Reinforce Remorse as a Premium Magnetite Source

Tempest Minerals (ASX:TEM) has released a second round of exceptional metallurgical results from the Remorse Magnetite Deposit at its Yalgoo Project, further strengthening the project’s development case. The latest Davis Tube Recovery (DTR) testing confirms that the magnetite mineralisation at Remorse consistently yields high-grade concentrate with very low impurities, reinforcing its suitability for future green steel applications.

Key Results from This Round:

• Fe concentrate grades up to 70.2% Fe

• Silica as low as 1.5%, and minimal sulphur/phosphorus across samples

• Test samples from deep and shallow zones across multiple drill holes

• Strong recovery in areas with visible magnetite, even at depth

• Supports further development and expansion of the current JORC resource (63.5Mt @ 30.6% Fe)

According to Table 1 on page 3, Sample S000460 achieved 70.2% Fe with just 1.5% SiO₂, indicating the presence of clean, high-grade magnetite across the deposit. These new assays expand on results from the first testwork program and confirm high-quality concentrate across a broader area.

Page 4 highlights the spatial distribution of these high-quality results, showing continuity between sections tested in the first and second programs. The company expects these outcomes to contribute to both resource upgrades and development planning in H2 2025.

Watch MD Don Smith explain how these results are feeding directly into project development milestones: