Pioneer has delivered a major technical breakthrough at the Springfield Prospect, with new independent geophysical interpretation confirming a large, coherent magnetic system directly associated with high-grade tungsten mineralisation.
Key Highlights
- District-scale magnetic anomaly defined, extending ~2.9km along strike and up to 600m wide, far exceeding the footprint of historic mining
- Independent interpretation links the anomaly to either a metasedimentary roof pendant or a pyrrhotite-rich skarn system, both highly prospective for tungsten
- Genetic link confirmed between scheelite and pyrrhotite, establishing pyrrhotite as a reliable magnetic proxy for tungsten mineralisation
- Rock-chip sampling confirms a high-grade reduced tungsten skarn, with results up to 2.98% WO₃, spatially coincident with the magnetic feature
- Historical mining tested only a small portion of the system, leaving the majority of the magnetic anomaly untested by modern exploration
- Geological setting and magnetic response show strong similarities to the Dolphin tungsten deposit (King Island, Tasmania)
- Results materially upgrade Springfield to a priority, district-scale tungsten target within Pioneer’s US critical minerals portfolio
With geophysics, petrography and geochemistry now fully aligned, Springfield is emerging as a large-scale tungsten system with significant upside.
Link to the Announcement: Click Here