Assay Results Extend Swell Zone at Mavis Lake – Starting from Surface and Extending over 1km in Strike

Lithium exploration and project developer Critical Resources Limited (ASX:CRR) (“Critical Resources” or “the Company”) is pleased to report further outstanding assay results from the Mavis Lake Lithium Project in Ontario, Canada.

Highlights

• Latest assay results from recent drilling at Mavis Lake have demonstrated continuity with previous, thick high-grade intercepts.
• The high-grade mineralisation within the Swell Zone starts from surface and extends over 1 kilometer in strike from east to west.
• Standout new assay results include:
  • Drill-hole MF23-226 with a Swell Zone intercept of 31.55m @ 1.06% Li2O from 205.6m down-hole, and an additional ‘Lower Zone’ high-grade intercept of 20.7m @ 1.44% Li2O from at 339.3m down-hole.
  • Multiple intercepts in drill-hole MF23-228, including:
    • 16.8m @ 1.18% Li2O from 177.05m down-hole,
    • 12.85m @ 1.39% Li2O from 208.1m down-hole, and
    • 14.85m @ 1.25% Li2O from 333.25m down-hole.
• Multiple Project development workstreams continue including baseline environmental studies, metallurgical test work, mining studies and project economic analysis.
• Results pending from Main Zone drilling at Mavis Lake and drill-target generation field work at the Project’s northern prospects.

The latest assays have confirmed and extended the recently discovered Swell Zone and, when integrated with previous drilling results, show a thick, high-grade mineralised structure, starting from surface and extending over 1km in strike, sitting oblique to the current Mineral Resource Estimate (MRE).

1km Strike Length of Swell Zone

Recent drilling has established an important connection between previous drilling results, validating the Swell Zone discovery and demonstrating substantial Resource upside.

Current assays confirm a significant, 1km strike of high-grade mineralisation, starting at surface (refer to Figure 2) in the east and plunging gently to the west. Significant assays are shown in Table 1 and full exploration results are provided in Appendix 1.

The results confirm substantial thicknesses of high-grade lithium spodumene mineralisation. Importantly, when incorporating historical drilling the Company has now achieved tight drill spacing (approximately 50m spacing). The thickness and continuity of the Swell Zone, commencing from surface, is expected to contribute to positive future mining economics.

Much of the Swell Zone mineralisation sits outside the current Inferred MRE for Mavis Lake and presents as an immediate opportunity for immediate Resource growth.

Figure 1: Plan view illustrating the collar location of released assay results and section locations.

Lower Zone Identified

Drill Holes MF23-226, MF23-227, MF23-228 and MF23-229 have all continued to intersect a “Lower Zone” of high-grade mineralisation, with a standout intercept of MF23-226 of 20.7 metres at 1.44% Li2O.

This Lower Zone was not identified in the Maiden Mineral Resource Estimate and presents as another immediate opportunity for Resource growth.

The Lower Zone can be seen in context relative to the Mavis Lake Main Zone intercepts in Figure 3.

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