
July 16, 2023
Lithium exploration and project development company Critical Resources Limited ASX:CRR (“Critical Resources” or “the Company”) is pleased to announce highly encouraging litho-geochemical results from the 2023 spring field program, which centered on the Gullwing and Tot prospects at the Company’s 100%-owned Mavis Lake Lithium Project in Ontario, Canada.
Highlights
- Spodumene mineralization with surface samples up to 3.2% Li2O confirmed during the spring field work program at the Mavis Lake Lithium Project
- 281 rock-chip grab samples taken over an area of 10km, centered on the known Gullwing and Tot Lithium-Cesium-Tantalum (LCT) outcrops
- Standout assay results include:
- Sample 3347562 with 3.2% Li2O from spodumene
- Sample 347565 with 2.6% Li2O from spodumene
- Sample 347604 with 2.4% Li2O from spodumene
- Sample 347561 with 2.2% Li2O from spodumene
- Near-term exploration drilling targets identified at the Gullwing and Tot prospects
- Mapping and sampling results also identified additional drill targets, around the newly discovered Little Wing LCT pegmatite outcrop
- Drill pad permits for Gullwing and Tot targets are under application with drilling expected to commence as soon as practically possible
- Resource extension drilling continues at the Mavis Lake Main Zone with assays pending
The Gullwing and Tot prospects and associated claims are contiguous with the claims that surround the Mavis Lake Main Zone, which hosts the Company’s 8Mt Inferred Resource.
Field teams conducted grass-roots exploration around the Gullwing and Tot LCT pegmatites from May to early June 2023, with the objective of confirming historical exploration results, extending the known footprint of LCT pegmatites and supporting the development of high-confidence drilling targets for future drill programs.
Along with geological mapping, a total of 281 rock-chip grab samples and 272 soil samples were taken over a strike extent of ~10km. Rock-chips have returned positive litho-geochemical assay results. The mobile metal ion (MMI) analysis for the soil sample results are pending.
A summary of key results can be seen in Figure 1 and Table 1, and full exploration results can be seen in Appendix 1.

Field Program Overview
Field crews mobilized in early May 2023 to conduct preliminary field work on the Gullwing and Tot prospects. During the course of the program, 281 rock-chip grab samples were collected for litho- geochemical analysis of both pegmatites and host rocks, 272 soil samples were taken for MMI analysis, and geological mapping of pegmatites and host rocks was undertaken.
Standout rock-chip results are summarised in Table 1, showing high-grade lithium and/or high- grade Rubidium as a key indicator for follow-up targeting.
Click here for the full ASX Release
This article includes content from Critical Resources, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
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