Critical Mineral Resources PLC (LSE:CMRS) jumped 16% as investors warmed to the latest update from its accelerator operations in Morocco.
Anzar, the first of the projects identified as having potential. has shown exceptionally high copper and silver grades from initial field exploration, it said.
One hand sample returned 40.12% copper and 272 grams per tonne (g/t) silver, which it conceded was unrepresentative, though CMR said channel sample results elsewhere were also "outstanding".
Shares rose 23% to 4.4p.