Serpentine is a large, near-surface copper-nickel system in St. Louis County adjoining established Duluth Complex deposits and infrastructure. Green Bridge holds an uncompleted option from Encampment Minerals to earn up to 70%; the July 2025 NI 43-101 report defines indicated and inferred resources, while Phase 1 drilling is intended to refine the model before economic studies.
- Country
- United States
- Commodity
- Cu
- Stage
- Exploration