Berkeley Energia (LSE:BKY), in its quarterly results, highlighted the firm's recently announced maiden Mineral Resource Estimate for its Conchas project in western Spain, delineating 11.8Mt at 0.41% lithium oxide and 0.21% rubidium oxide.
The company, which is developing critical minerals and uranium projects in Spain, said the resource contains roughly 49,000 tonnes of lithium oxide and 25,200 tonnes of rubidium oxide, all classified as Inferred. Mineralisation starts at surface and remains open at depth, and preliminary metallurgical test work using flotation and magnetic separation showed strong recoveries at acceptable grades.
Berkeley said the resource is amenable to bulk-tonnage, open-pit mining and demonstrates a globally significant rubidium deposit, a metal classified as critical by the US, Japan and New Zealand for use in defence, aerospace and communications applications.
Next steps include infill drilling to upgrade the resource classification and a second phase of metallurgical test work.
Separately, José Bogas Gálvez, former chief executive of Spanish utility Endesa, joined Berkeley's board as a non-executive director, a move the company said strengthens its position in Spain's energy sector.
The appointment comes as Spain's nuclear debate intensifies: the Nuclear Safety Council approved extending the Almaraz plant's licence to June 2030, and the European Commission has urged member states to avoid premature nuclear closures.
Berkeley's $1.25bn ICSID arbitration claim against Spain over its Salamanca uranium project has been bifurcated, with a hearing on jurisdictional objections scheduled for mid-2027.
The company held A$62m in cash with no debt at quarter-end.
News Intelligence what this means for the company
Berkeley Energia has published its quarterly update, highlighting its recently announced first mineral resource estimate for Conchas: 11.8 million tonnes grading 0.41% lithium oxide and 0.21% rubidium oxide, all classified as inferred. The deposit is open at depth and amenable to open-pit mining, with preliminary metallurgical work showing acceptable recoveries. The update also marks the board appointment of José Bogas Gálvez, former Endesa chief, and updates on the company's $1.25bn arbitration against Spain over its Salamanca uranium project—a claim filed in June 2026—now scheduled for a jurisdictional hearing in mid-2027.
The recent maiden resource de-risks Conchas as a real asset and establishes rubidium as a secondary value driver in a globally significant deposit; however, the inferred classification and early-stage metallurgical work mean material technical and permitting risk remains before any development decision. The board appointment of a former Spanish utility executive and the bifurcation of the arbitration claim suggest Berkeley is positioning itself for long-term engagement with Spanish regulators, but the $1.25bn claim remains unresolved and the company's A$62m cash position is modest relative to the capital intensity of future mine development.
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