- Critical Resources (CRR) reports “exceptional” metallurgical testwork results on samples from its Mavis Lake lithium project in Ontario, Canada
- CRR says the first metallurgical testwork program produced “high-grade, low-impurity” spodumene concentrate with “very high” recoveries
- A representative feed grade produced a 6.02 per cent lithium oxide concentrate with a total lithia recovery of 77.5 per cent via heavy liquid separation (HLS) and flotation
- Meanwhile, a high feed grade produced a 5.98 per cent lithium oxide concentrate with a total lithia recovery of 87.3 per cent via HLS and flotation
- Shares in CRR are down 2.22 per cent to 4.4 cents at 12:57 pm AEST
Critical Resources (CRR) has reported “exceptional” metallurgical testwork results on samples from its Mavis Lake lithium project in Ontario, Canada.
The company has completed its first metallurgical testwork program, producing “high-grade, low-impurity” spodumene concentrate with “very-high” recoveries at Mavis Lake.
CRR said the high-lithium grades and recoveries achieved, together with very low impurities, highlighted the potential for Mavis Lake to produce a premium product.
“Metallurgical test work is a key step in advancing Mavis Lake along its development pathway, with that pathway underpinned by these excellent results,” CRR Managing Director Alex Cheeseman said.
“With continued drilling and concurrent studies work, we are set on our pathway to unlocking the economic potential of Mavis Lake.”
The testwork program included two tranches, with the first resulting in the production of “excellent” grade concentrate of 6.4 per cent lithium oxide, with very-low iron oxide impurities.
The first tranche was carried out as a basic mineralogical characterisation and coarse fraction heavy liquid separation (HLS) testwork program focused on HLS and magnetic separation.
The second tranche expanded to incorporate concentration test work on the HLS findings and fines components.
A total of 50 quarter-and-half core samples across seven drill holes were delivered to SGS Canada as part of the testwork program, compiled to create two composites — a representative-grade composite and a high-grade composite.
A high feed grade produced a 5.98 per cent lithium oxide concentrate with a total lithia recovery of 87.3 per cent via heavy liquid separation (HLS) and flotation.
Meanwhile, a representative feed grade produced a 6.02 per cent lithium oxide concentrate with a total lithia recovery of 77.5 per cent via HLS and flotation.
Moving forward, CRR has started permitting to allow bulk sample collection, which it aims to complete during the Canadian summer.
If the company chooses to advance to preliminary feasibility studies, the bulk samples will allow for more extensive test work.
Shares in CRR were down 2.22 per cent to 4.4 cents at 12:57 pm AEST.