Bend
Project
In 1992, E.K. Lehmann and Associates prepared a historical estimate for the Jump River Joint Venture of approximately 4.0 million tonnes, comprising a Copper Zone of 2.8 million tonnes grading 2.41% Cu, 1.43 g/t Au and 13.70 g/t Ag, and a Gold Zone of 1.2 million tonnes grading 4.73 g/t Au, 0.31% Cu and 2.79 g/t Ag (see disclaimer below).
Historical drilling returned broad mineralized intervals, including 67.7 m grading 0.99 g/t Au and 1.01% Cu in B90-06, including 27.6 m grading 1.43 g/t Au and 2.40% Cu; 38.1 m grading 1.25 g/t Au and 1.69% Cu in B95-21, including 4.6 m grading 5.15 g/t Au and 2.77% Cu; and 62.98 m grading 1.31 g/t Au and 0.75% Cu in B90-01, including 15.55 m grading 2.62 g/t Au and 2.66% Cu. These are drilled intervals and do not necessarily represent true thickness.
Mineralization remains open along strike and at depth. Historical geophysical surveys and mapping identify an interpreted stratigraphic horizon and conductive targets for further exploration. Our exploration plans include step-out drilling and testing deeper conductors to investigate extensions of known mineralization.
Location & Infrastructure
The Bend VMS deposit is located in Taylor County, northern Wisconsin, approximately 19 miles north of Medford within the Chequamegon-Nicolet National Forest. County and forest roads provide access to the project area. Green Light Wisconsin LLC holds a mining lease over the 40-acre Soo Line private mineral estate. The adjoining federal mineral area is subject to a pending prospecting-permit application; work on that area requires the applicable permits, approvals and access authorizations.
Regional Geology
The Bend VMS deposit is part of the Paleoproterozoic Penokean Volcanic Belt (PVB), also known as the Wisconsin Magmatic Terranes. This geologic region, located within the Southern Structural Subprovince of the Canadian Shield, formed during the Early Proterozoic Penokean Orogeny (~1890–1830 million years ago).
Stretching over 280 kilometers across northern Wisconsin into Michigan’s Upper Peninsula—and extending further west into Minnesota—the belt comprises ancient volcanic, sedimentary, and plutonic rocks. These formations have undergone significant metamorphism and deformation due to historic tectonic events, including island arc accretion and continental collision along the margin of the Superior Craton.
Today, much of the belt is hidden beneath glacial deposits, with exposed remnants offering valuable insight into its complex geological history and mineral potential.
Project Mineralization
Exploration at the Bend Project has identified two steeply dipping, stacked massive and semi-massive sulfide lenses—an upper and lower lens—hosted near the top of a quartz-crystal tuff unit (XT unit). These lenses range in true thickness from 1.5 to over 12 meters and are underlain by fragment-rich semi-massive sulfide zones.
The lower lens is thickest near the deposit’s center, while the upper lens, composed of two lobes, is more continuous along strike and down-dip. Both lenses extend to the subcrop and are overlain by a saprolite layer and glacial sediments.
Mineralization is dominated by fine- to medium-grained pyrite with interstitial chalcopyrite, tetrahedrite-tennantite, arsenopyrite, bornite, chalcocite, and associated gold tellurides. Gangue minerals include quartz, sericite, and carbonate. Notably, chalcopyrite and bornite are observed as exsolution textures within pyrite, and geochemical anomalies in arsenic, antimony, bismuth, and tellurium reflect the complex mineralogy.
A semimassive sulfide zone between the lenses—interpreted as a debris apron—hosts localized epigenetic copper-gold stockwork and stringer mineralization. This zone thickens where the lenses converge and is thought to have formed along a paleotopographic high, influencing original sulfide deposition.
Supergene enrichment has been identified near subcropping zones. A thin chalcocite-bornite replacement zone and higher-grade copper-gold intervals suggest the presence of a secondary enrichment blanket. Notable intersections include:
- Historical hole B95-21 returned a drilled interval of 4.58 m grading 5.15 g/t Au and 2.77% Cu within the lower lens. This interval does not necessarily represent true thickness.
Historical Resources and Drill Results
Historical exploration at Bend included drilling by the Jump River Joint Venture, Sharpe Energy & Resources and the Hudbay–Aquila alliance. GreenLight commenced its own drilling in 2025 and reported further results in 2026. The 1992 historical estimate and selected historical drill results are presented below; GreenLight’s more recent results are available in its dated drilling news releases.
Mineralized Zone | Tonnage (tonnes) | Cu (%) | Au (g/t) | Ag (g/t) |
|---|---|---|---|---|
Total Historical Estimate | 4.0 million | 1.74 | 2.44 | 11.56 |
Cu Zone | 2.8 million | 2.41% | 1.43 | 13.70 |
Au Zone | 1.2 million | 0.31 | 4.73 | 2.79 |
* Historical estimate — Jump River Joint Venture / E.K. Lehmann and Associates, Inc., 1992. The estimate provides historical context for the scale and grades considered by the former operator and is not a current mineral resource or mineral reserve. A qualified person has not done sufficient work to classify the historical estimate as current mineral resources or mineral reserves. GreenLight is not treating the historical estimate as current mineral resources or mineral reserves.
The estimate was prepared using approximately 33 diamond drillholes. Polygonal and cross-sectional estimates were prepared and averaged; no cut-off grade was stated. It was classified as a “geologic resource” under U.S. Geological Survey Circular 831, with no directly comparable current CIM classification. Its reliability is limited by its age, incomplete supporting records and the absence of a stated cut-off grade. Drilling completed after 1992, including GreenLight’s subsequent drilling, has not been incorporated into a current mineral resource estimate.
Verification would require reconciliation of geological domains, collar locations, down-hole surveys, assays, density data and quality-control records, together with additional sampling or drilling as necessary, followed by preparation of a new estimate under current CIM Definition Standards. The historical estimate should not be relied upon as a current mineral resource or mineral reserve. Historical studies associated with the estimate are not a current economic assessment. Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that the historical estimate, in whole or in part, will be verified as a current mineral resource, become economically viable or be converted to mineral reserves.
Reported drill intervals are down-hole lengths and do not necessarily represent true thickness.
Notable historical drill intercepts 1,2 include:
Drill Hole | Interval (m) | Cu (%) | Au (g/t) | Including |
|---|---|---|---|---|
B90-06 | 67.69 | 1.01% | 0.99 | 27.6m of 1.43 g/t Au and 2.40% Cu |
B95-21 | 38.05 | 1.69 | 1.25 | 4.58m of 5.15 g/t Au and 2.77% Cu |
B90-01 | 62.98 | 0.75 | 1.31 | 15.55m of 2.62 g/t Au and 2.66% Cu |
B91-08 | 66.76 | 0.68 | 2.83 | 22.11m of 6.44 g/t Au and 1.71% Cu |
B91-12 | 20.33 | 1.19 | 1.07 | 4.87m of 2.16 g/t Au and 2.09% Cu |
B90-2 | 26.22 | 0.91 | 1.31 | 15.48m of 0.84 g/t Au and 3.88% Cu And: 4.57m of 4.10 g/t Au and 0.10% Cu |
B12-08 | 63.1 | 0.09 | 1.32 | including: 27.4m of 2.1 g/t Au and 0.04% Cu And: 5.4m of 6.34 g/t Au and 0.02% Cu |
B12-04 | 74.5 | 0.04 | 1.04 | 9.0m of 2.27 g/t Au and 0.05% Cu |
- Bend Technical Report: “An Evaluation of the Bend Volcanogenic Massive Sulfide (VMS) Deposit, Taylor County, Wisconsin, U.S.A.”, with an effective date of January 1st, 2025; Company is not treating the historical estimates as current mineral resources or mineral reserves and the historical estimates should not be relied upon or understood to indicate the existence of reserves or resources. This historical resource estimate was prepared by Jump River Joint Venture in 1992.
- Reported intervals are drill thickness and do not necessarily represent true thickness. Drilled by Jump River Joint Venture, Sharpe Energy & Resources, Aquila Resources Inc./Hudbay Minerals Exploration Alliance.
