08:35 AM EDT, 09/17/2025 (MT Newswires) -- Nevada Lithium Resources ( NVLHF ) said Wednesday that it identified significant cesium and rubidium mineralization within the existing drill core on its Bonnie Claire lithium project in Nevada.

A review of assays include the presence of cesium and rubidium. Results include 248 parts per million cesium over 318.5 feet and 313 ppm rubidium over 298.5 feet.

Initial test work indicates that both elements have advanced through the initial lithium/boron recovery stages of the project's preliminary economic assessment flow sheet and are present in the pregnant leach solution, Nevada Lithium said.

Rubidium and cesium are both included in the US Interior Department's draft critical minerals list, the company said.

"These elements represent the potential to increase the significant boron by-product revenue stream identified in our recently released PEA," chief executive officer Stephen Rentschler said.