Open Lode — a critical minerals briefing

Open Lode is the Critical Minerals editorial desk: a collection of narrated briefings and project notes covering the countries, elements, mines, and processing projects shaping critical-mineral supply. Browse the shelf to understand what is being produced, what remains open, and where capital, offtake, or development work may still be needed.

7 open projects

  • USGS mine production for 2025: about 30,000 kilograms, the largest national line. Not a rhenium mine. Porphyry copper, then molybdenite, then a roast. Molymet is the processor that has spent decades catching the gas. The Survey’s Chilean reserve figure, about 1.3 million kilograms, is rhenium inside molybdenum deposits, not bars in a vault.

    Chile

    Stage
    Operating
    Capital
    30,000 kg
    Still open
    Whether every flue is scrubbed