September 18, 2023
Lithium exploration and project development company Critical Resources Limited ASX:CRR (“Critical Resources” or “the Company”) is pleased to report exceptional new thick, high-grade results from ongoing following drilling around the recent breakthrough drill-hole MF23-207, with assays continuing to validate and expand the recently discovered “Swell Zone” at the Mavis Lake Lithium Project in Ontario, Canada.
Highlights
- Exceptional new results from drilling following up the recently reported results from drill-hole MF23-207 (74.4m @ 1.18% Li2O including 32.95m @ 1.81% Li2O).
- Drill holes testing the Swell Zone both East and West of MF23-207 have continued to intersect large, high-grade intervals of mineralisation, providing a greater level of confidence that the thick, high-grade mineralisation extends over a 200m strike.
- Assays confirm:
- Drill-hole MF23-213 with 50.2m @ 1.28% Li2O from 203.6m down-hole, including multiple meter-wide segments of extremely high-grade spodumene mineralisation, from 2.11% Li2O to 4.18% Li2O.
- Drill-hole MF23-214 with 65.45m @ 0.84% Li2O from 186.25m down-hole, including 55m @ 0.95% Li2O from 194m down-hole, including 25.85m @ 1.30% Li2O from 214m down-hole.
- Permit approval for further drill pads to continue testing the Swell Zone are expected imminently, allowing follow-up drilling to commence in the coming weeks.
- All drilling results are rapidly adding tonnage to the existing Resource, putting the Company on track for a major Resource upgrade in H1 2024.
Critical Resources Managing Director, Alex Cheeseman said:
“These outstanding results in terms of both thickness and grade provide further evidence that the Mavis Lake Swell Zone is a game-changing discovery for the Company.
“Continued wide, high-grade results make it clear that Mavis Lake is a project with significant potential. Its location, within 10km of the City of Dryden, immediate access to world-class infrastructure and the surrounding automotive industries in Southern Ontario and Michigan State, make this a project of strategic importance.”
Exploration Overview
Drilling has been designed to continue to test the Swell Zone both east and west of Drill Hole MF23- 207, within the limits of current approved drill pads. Assay results have confirmed that the Swell Zone has a current strike of 200m, showing consistency of mineralisation thickness (from 50m to 74m) and also consistency of grade (from 0.84% Li2O to 1.28% Li2O), including localised peaks of extremely high grade up to 4.18% Li2O.
Current drilling forms part of the 2023 resource extension drilling program, seeking to establish Mavis Lake as the largest single-site, JORC Code 2012 Compliant Lithium Resource in Ontario.
Full exploration results are provided in Appendix 1.
Demonstrating Consistency in the Swell Zone
The outstanding high-grade assays and broad zones of mineralisation in MF23-213 and MF23-214 extend the Swell Zone laterally while continuing to solidify the significance of the Swell Zone. Figure 1 shows the Plan view of the key intercepts in the Swell Zone, with Figures 2 and 3, a long section and cross section respectively, showing Swell consistency. Significant assay data can be seen in Table 1.

MF23-213 intersected the Swell Zone approximately 115m west from MF23-207’s 74.4m @ 1.18% Li2O pegmatite intercept. Drill hole MF23-213 provides a high level of confidence in the continuity of the large widths and high grades intersected so far in the Swell Zone while also delineating the trend and geometry of this important new structure towards the West, as shown in figure 2. The Swell Zone trend has a shallow plunge of approximately 10 degrees, trending at 280Az.
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.
CRR:AU
Alert Options
No alert set
INN Article Notification
Alert Option
You will be notified when this event occurs. No additional settings needed.
The Conversation (0)
21 June 2022
Critical Resources
High-grade Lithium Portfolio, in a Tier 1 Location, Aligned with the World’s Green Energy Transition
High-grade Lithium Portfolio, in a Tier 1 Location, Aligned with the World’s Green Energy Transition Keep Reading...
09 July
Pentagon Launches US$300 Million Lithium Stockpile
The US Department of Defense is seeking to purchase up to US$300 million of battery-grade lithium carbonate over the next five years as part of escalating Washington's strategy to insulate defense and commercial supply chains from global shocks.According to a procurement solicitation published... Keep Reading...
08 July
Cormac O’Laoire: Defense is Creating a New Growth Story for Battery Materials
A new era is beginning for the battery materials industry, as the defense sector joins energy storage systems and electric vehicles to become a primary catalyst for demand.Speaking with the Investing News Network at the Fastmarkets Global Battery and Critical Materials Conference in Las Vegas,... Keep Reading...
03 July
Fastmarkets 2026: 3 Themes Shaping Lithium's Next Chapter
The 18th edition of the Fastmarket’s Global Lithium, Battery and Critical Materials took place in Las Vegas last week, bringing together an array of analysts, mining companies, market watchers and end use customers. This year’s event combined three segments of the battery and critical minerals... Keep Reading...
17 June
Infographic: Batteries Absorb 88 Percent of Global Lithium Supply
Lithium has effectively transformed into a single-use commodity, with rechargeable batteries now consuming 88 percent of the global supply.According to data from the US Geological Survey (USGS) Mineral Commodity Summaries 2026, the rapid scaling of electric vehicle (EV) manufacturing and energy... Keep Reading...
08 June
American Battery Technology Reclaims DOE Lithium Grant After Successful Appeal
American Battery Technology Company (NASDAQ:ABAT) announced that it has successfully appealed the US Department of Energy’s (DOE) termination of a US$115 million grant, securing full reinstatement of the federal funding for its commercial-scale lithium refinery in Nevada.Under the reversal, the... Keep Reading...
27 May
Why Global EV Sales Are Telling Three Different Stories in 2026
New data from Benchmark Mineral Intelligence shows that the global electric vehicle (EV) market fractured along regional lines in early 2026. While global sales reached 5.6 million passenger EVs through April — a modest 6 percent year-on-year increase — that headline number masks a stark... Keep Reading...
Latest News
Interactive Chart
Latest Press Releases
Related News
TOP STOCKS
American Battery4.030.24
Aion Therapeutic0.10-0.01
Cybin Corp2.140.00






