Cole Gold Mines
Exploring for high-grade gold in the prolific Red Lake Mining District
5,300-Metre Drill Program Successfully Completed
Rockland Resources has completed its expanded 5,300-metre, 19-hole diamond drill program at the Cole Gold Mines Property — the most comprehensive modern exploration program ever conducted on the property. Visible gold has been observed in a number of the 19 holes completed. Assay results remain pending and will be reported as received.
RR-26-02 at 75m (NQ Core)
RR-26-02 at 187m (NQ Core)
145 g/t Au Grab Sample — Visible Gold
Key Findings
What the Program Revealed
Cole Mine System Confirmed at Depth
Drilling confirmed the presence of the gold-mineralized vein system at multiple depths and orientations. Visible gold was intersected both within and below the existing historic workings, confirming that mineralization continues well beneath previously developed levels.
Gold mineralization is hosted within deformed quartz veins, veinlets and stockwork zones cross-cutting broad intervals of intense silicification — alteration envelopes that often extend over widths in excess of tens of metres in select holes. The system has now been drilled to greater depths than at any point in the property's history and remains open at depth.
GSL Zone — New Target Structure
The program was expanded to 5,300 metres in part to follow up on visual success in drilling one of the new target structures, the "GSL Zone". Visible gold has been observed in drill holes targeting this zone.
This new zone was not previously documented among the property's known vein targets and demonstrates that the gold footprint at Cole extends considerably beyond the historic mine area.
Rheological Contact — Positive Results at Every Location
A key objective was to systematically test the rheological contact between ultramafic and felsic rock packages — a primary gold-trapping environment in the Red Lake district. Drill holes targeting this contact returned positive results at every tested location, including visible gold occurrences.
New vein systems — several previously undocumented on the property — were identified and are associated with broader alteration systems, with substantial widths in select intervals.
Dome-Style Target Defined by Drone Magnetics
Concurrent with drilling, a drone magnetic survey was completed over the Cole property and adjacent lake area. Results indicate a complex fold/fault system proximal to a prominent magnetic low, consistent with a substantial diorite intrusion capable of remobilizing gold into dilation zones and conjugate fault systems.
Combined with the interpreted 4.5-kilometre-long structural corridor already demonstrated to carry gold, newly identified alteration systems, and the magnetic dome signature, the Company's geologists interpret the potential for a large, structurally complex gold system organized around a dome-style intrusive architecture.
"What this program has returned is extraordinary — not just in terms of the visible gold we have observed in drilling, but in what it tells us about the scale and complexity of the system at Cole. We set out to confirm gold at the Cole mine, test the rheological contact, and follow up on our high-grade surface samples. We accomplished all three. Importantly, we have identified new veins, broader alteration systems than we knew existed, and now a compelling dome-style target defined by airborne magnetics that points to a structurally complex, potentially district-scale gold system. Cole Gold Mines sits in one of the most prolific gold districts on Earth, and we believe we have only scratched the surface of what this property holds. We look forward to reporting assay results as they are received."
World-Class Location
Red Lake Gold District
The Red Lake mining camp is one of the most prolific gold districts in Canada, having produced more than 30 million ounces of gold from 28 mines.
The Cole Gold Mines Property sits within the Pipestone Bay Deformation Zone, approximately 30 kilometres west of the Cochenour, Campbell, and Red Lake Mine Complex.
Neighboring Operations
Cole Gold Property location within the Red Lake Gold District
A Rich Legacy
History of the Cole Gold Mine
Exploration and mine development work was initiated by J.Y Cole, Jr, and subsequently by Cole Gold Mines.
By 1937, the shaft was deepened to 530 feet (161m) and additional levels at the 300-, 400- and 500-foot levels were established.
Cole Gold Mines Ltd (1926–1938) was active on the property with surface prospecting, stripping, mapping, trenching and sampling, identifying dozens of gold-bearing veins on the property.
The Cole mine is considered a non-producing historic gold mine. Aside from recovering gold from underground development, the veins at the Cole mine are still intact.
Exploration Focus
Vein Target Areas
Multiple vein targets have been identified on the Cole Gold property.
Target areas are defined by visible gold-bearing quartz veins that have been mapped and sampled on the property, historically (1930s-1970s) and recently (2020, 2021 and 2025).
Vein target areas are of similar size as the Cole mine target area.
Geology map by Horwood, 1940
Cole Lake Target
Two 2025 grab samples from outcrop of Vein No 20 returned gold by gravimetric results of 111 gpt Au and 145 gpt Au.
Veins are dark grey to smoky quartz.
This vein outcrop is 1 kilometer southwest of the Cole mine.
Cole Central Target
Historic mapping and sampling has identified multiple visible-gold-bearing quartz veins.
Coarse visible gold in smoky quartz vein grab sample from the Cole Property.
Cole South Target
Structurally and lithologically controlled gold-bearing quartz veins.
- More than 30 counts of visible gold
- Veins dip 65-75° to northeast, similar to veins at Cole mine
- Historic hole DD12 drilled into the sheared lithology contact: 4.7m wide, high-grade with 13 veins
- Cole South target is drill ready
Historic Hole DD12
Historic drill log for DD12 from 1930s Cole Gold Mining time was found in the local library.
Historic hole 12 intersected a steeply dipping, high gold grade, vein set, 4.7m true width and containing 13 veins.
*Historic drill core assays, without QAQC and not yet verified.
Cole North Target
The Cole North vein target is composed of multiple subparallel quartz veins that are visible gold bearing.
Veins are hosted in an intrusive rock and controlled by two north-south trending strike slip faults. Vein widths were mapped in the range of 1-6 feet (0.3-1.8m).
Veins identified through historic mapping and sampling include Nos 26, 27, 30 and 31. Vein 26 dips north and vein 30 dips south.
The Cole North vein target area is 300m long by 200m wide and is open to the East, under Pipestone Lake.
Historic mapping and sampling has identified multiple visible-gold-bearing quartz veins located 400 meters North of the Cole gold mine.
Historic Discovery
Cole Gold Mine Underground
Underground mine maps and drill sections were recently found in a public local library in the town of Red Lake.
Kerr Addison did not have access to these maps. These maps were used to model the gold-bearing veins of the historic Cole Gold mine in 3D.
3D Gold Vein Model
The underground gold-bearing vein system has been modelled in 3D.
Based on historical data, the veins at Cole Gold Mine extend 300-400 meters along strike and are around 0.6 to 1.2m in width.
The veins are controlled by two northeast trending strike-slip faults (grey planes) with vein offsets of around 30 to 50m.
Technical Data
Cole Gold Project: Veins 1, 2 and 3
The modelled veins at Cole Gold Mine must be re-drilled by modern methods, including insertion of blanks, duplicates and certified standards (QAQC) to get NI-43-101 compliant gold grades and widths for the veins.
| Vein Number | Strike Length (m) | Average Width (m) | Gold Grades (g/t Au) | Average Dip | Comments |
|---|---|---|---|---|---|
| No 1 | 130m west of main fault 250m east of main fault Total strike: 380m |
0.7 to 1.2 m (locally up to 1.72m) |
3.0 to 18.3 g/t Au* | 65-70° | Comprises at least 3 veins plus small spurs. |
| No 2 | 80m west of main fault 160m east of main fault Total strike: 240m |
0.6 to 1.1 m (widths up to 3m) |
2.6 to 12.7 g/t Au* | 65-70° | Located on north side of No 1 vein. |
| No 3 | 140m west of main fault 145m east off main fault Total strike: 285m |
0.6 to 0.8m | 6.2 to 17.1 g/t Au* | 65-70° | Located on south side of No 1 vein. |
*These numbers are non-NI 43-101 compliant and based on historic mine maps, lacking QAQC procedures.
Gold in Wallrock
Historic underground channel sampling was limited to veins.
Wallrock carries gold as well as the veins.
2021 Drilling by Rockland shows additional, lower grade gold-mineralization in both the hanging wall rocks and footwall rocks of the main vein.
Exploration Potential
Depth Extensions
Historic underground drilling from level 500' (152m) shows veins continue at depth.
In 2021, Rockland Resources drilled 13.3 g/t Au over half a meter in hole RL-CP-002.
Total vertical depth of drilled gold mineralization is ~320 meters.
District Context
Depth of Gold Mines in Red Lake Gold District
Cole Gold Mine
Gold has been drilled down to a depth of 320m, with a lot of depth potential.
West Red Lake Gold
Madsen mine was historically mined to a depth of 1200 meters. Gold is drilled at a vertical depth of 1373m.
Red Lake Gold Mines
The gold mines in Red Lake Gold District continue to more than two kilometers depth.
Technical Analysis
Drone-Supported Surveys Targeting Lithology Contact
The Cole Gold Property is located in the pressure shadow of an ultramafic body that has intruded into, and been rotated by, a double-plunging fold system with a strong east-west trending shear following the fold axis.
Underway
2026 Exploration Plan
Drone Survey
Magnetics, TopographyDrone-supported magnetic, high-resolution orthoimagery and topography surveys → identify major structures and magnetic lows.
Diamond Core Drilling
5,300 metres · 19 Holes · Cole Gold Mines Property5,300-metre expanded diamond drill program successfully completed → 19 holes, visible gold observed in multiple holes, assay results pending.
Program Assessment & Strategic Planning
Evaluating Results · Determining Next StepsThe Rockland Resources team is currently reviewing all data from the completed 5,300-metre drill program — encompassing core observations, structural interpretations, newly identified vein systems, and the drone magnetic survey results — to evaluate the full geological implications of the program and determine the optimal path forward for the Cole Gold Mines Property.