Serpentine Project

StageResource
LocationMinnesota, United States
Operating permitFast-41 (granted), 2025-09-04
News releases5
Reported2025-05-08 – 2026-07-02
Also calledSerpentine, Serpentine Copper-Nickel, Copper-Nickel-PGE Serpentine

Serpentine Project as reported in Green Bridge Metals Corporation’s news releases, read by Mining News Terminal. Each row links to its release.

Resource estimates

Date	Category	Estimate	Type
2026-02-17	Inferred	279.90 Mt @ 0.37 % Cu, 0.12 % Ni, 0.007 % Co, 0.53 % CuEq	—
2026-02-17	Indicated	21.60 Mt @ 0.46 % Cu, 0.16 % Ni, 0.69 % CuEq	—
2025-09-04	Indicated	21.60 Mt @ 0.46 % Cu, 0.16 % Ni, 0.014 % Co, 0.69 % CuEq	Restated
2025-09-04	Inferred	279.90 Mt @ 0.37 % Cu, 0.12 % Ni, 0.007 % Co, 0.53 % CuEq	Restated
2025-07-14	Inferred	277.00 Mt @ 0.37 % Cu, 0.12 % Ni	—
2025-07-14	Indicated	22.00 Mt @ 0.47 % Cu, 0.16 % Ni	—
2025-05-08	Indicated	11.58 Mt @ 0.34 % Cu, 0.11 % Ni, 0.01 % Co, 1.39 % S, 0.5 % CuEq	Update
2025-05-08	Inferred	119.85 Mt @ 0.32 % Cu, 0.11 % Ni, 0.008 % Co, 1.69 % S, 0.47 % CuEq	Update
2025-05-08	Indicated	7.86 Mt @ 0.49 % Cu, 0.15 % Ni, 0.013 % Co, 2.71 % S, 0.73 % CuEq	Update
2025-05-08	Inferred	151.60 Mt @ 0.4 % Cu, 0.13 % Ni, 0.007 % Co, 2.31 % S, 0.59 % CuEq	Update
2025-05-08	Indicated	354 kt @ 0.34 % Cu, 0.11 % Ni, 0.004 % Co, 1.42 % S, 0.49 % CuEq	Update
2025-05-08	Inferred	5.03 Mt @ 0.46 % Cu, 0.14 % Ni, 0.003 % Co, 3.97 % S, 0.66 % CuEq	Update
2025-05-08	Indicated	1.77 Mt @ 1.16 % Cu, 0.52 % Ni, 0.051 % Co, 13.57 % S, 2.08 % CuEq	Update
2025-05-08	Inferred	445 kt @ 1.12 % Cu, 0.48 % Ni, 0.055 % Co, 12.91 % S, 1.98 % CuEq	Update
2025-05-08	Inferred	277.00 Mt @ 0.37 % Cu, 0.12 % Ni	Update

Date	Program	Size	Method and metal
2026-07-02	drilling, planned	—	diamond · copper, nickel
2026-02-17	drilling, planned	10 holes	diamond · copper, nickel

Date	Permit	Status	Authority
2025-09-04	Fast-41	granted	—

Date	Deal	Status	Interest	Area
2025-07-14	option in	signed	70%	—
2025-05-08	option in	proposed	70%	—

Date	Report	Author
2025-09-04	resource, filed	APEX Geoscience; P&E Mining Consultants

Date	Headline
2026-07-02	Green Bridge Metals Obtains Exploration Drilling Plan Approval and Selects Foraco for Phase 1 Diamond Core Drilling at Serpentine Copper-Nickel Project, Minnesota, USA
2026-02-17	Green Bridge Metals Advances Plans for H2 2026 Phase 1 Drill Program for Serpentine, Adjacent to NewRange’s NorthMet and SunriseProjects, Minnesota, USA
2025-09-04	Green Bridge Metals Corporation Announces Filing of a NI 43-101 Technical Report and Mineral Resource Estimate for the Flagship Serpentine Project
2025-07-14	Green Bridge Metals Enters into Definitive Agreement to Option Large Bulk Tonnage Copper-Nickel-PGE Serpentine Project, Duluth Complex, Minnesota, USA
2025-05-08	Green Bridge Metals Enters LOI to Option Large Bulk Tonnage Copper-Nickel-PGE Serpentine Project, Duluth Complex, Minnesota, USA