Brassie Creek Cu-Au Project
KAMLOOPS MINING DISTRICT · BRITISH COLUMBIA
NI 43-101 Technical Report Brassie Creek Project, SLR April 15, 2026
Porphyry–skarn copper-gold property on the northern margin of the Guichon Creek Batholith — 15 km north of Highland Valley Copper.
1,862 ha | 15 km N of HVC | ~20 km N of Getty | ~36 km W of New Afton |
Nine contiguous claims | Highland Valley Copper | Eastern Guichon margin | Iron Mask / New Afton camp |
Overview
THE PROPERTY
Brassie Creek sits in the Quesnel Terrane along a ~150 km porphyry–skarn corridor tied to the Late Triassic Guichon Creek Batholith and Nicola Group volcano-sedimentary rocks. The setting and mineralization styles are analogous to the Highland Valley Cu-Mo porphyry district 15 km south and to the Craigmont Cu-Fe skarn 60 km south.
Work since the 1970s has outlined three priority centres across a 1 km × 1 km mineralized anomaly: the Brassie Creek polymetallic skarn, the Rattlesnake Creek porphyry–epithermal target, and a 2020 VLF-EM resistivity low interpreted as a buried intrusive body beneath surface skarn.
Surface copper ranges from background to 1% Cu, with historical rock gold from 0.15 g/t to 1.54 g/t. The technical foundation is the April 15, 2026, NI 43-101 report prepared by SLR Consulting.
World Copper has the option to acquire a 100% interest in and to the mineral claims comprising the Brassie Creek Project, subject to a 2% net smelter returns royalty.
Project location on the Guichon / Quesnel copper belt. Nearby deposits shown for context only and are not necessarily indicative of mineralization on the Property. Source: SLR, 2026.
Location — the Kamloops copper camp
DISTRICT SETTING
The project is about 60 km west of Kamloops at 50°43’37” N, 121°01’14” W. Highland Valley Copper — Teck’s low-grade, high-tonnage Cu-Mo operation, in production since 1962 and planned through at least 2046 — lies 15 km south on the same batholith. Getty Copper sits ~20 km south along the eastern Guichon margin. New Afton, an alkalic Cu-Au underground mine in the Iron Mask district, is about 36 km east. Craigmont, the district Cu-Fe skarn analogue, is about 60 km south. Access is year-round from Kamloops via Highway 1, Walhachin Road and Barnes Lake Road (~67 km to the northern claim boundary), then forest-service roads on the claims. A high-voltage line is about 7 km west. Climate is cold semi-arid (~250 mm precipitation). Snow is light to moderate from December to April and does not stop field work. Elevations run from about 400 to 1,000 metres, with grassland and sagebrush in the north, more forest to the south, and commonly exposed bedrock. Kamloops supplies labour, fuel, assay prep, an airport and the service base that already supports Highland Valley and New Afton.
Nine contiguous claims totalling 1,861.84 ha with Brassie, Rattlesnake and VLF target areas. Source: SLR / BC MTO.
Highlights
WHY THE ADDRESS MATTERS
- Same Guichon Creek Batholith that hosts Highland Valley and Getty; same Nicola carbonate–volcanic package that hosts Craigmont-style skarn.
- Two working models on one property: intrusion-centred Highland Valley-type porphyry and contact-related Cu-Fe-Pb-Zn-Ag skarn.
- Roof-zone / border-phase setting — the part of the batholith where both porphyry and skarn fluids typically leak.
- ~800 × 800 m anomaly envelope already outlined by IP chargeability, magnetic lows, resistivity lows and Cu-Mo-As-Hg-Au.
- Lightly drilled: five diamond holes (579 m) plus limited 1979 percussion. The footprint is untested at depth.
- Best historical hole hit the exact limestone–volcanic contact the skarn model predicts: 13.99 m of 0.24% Cu, 1.90% Zn, 0.23 g/t Au.
- 2026 QP confirmation rock grab sampling returned 5,790 ppm Cu at Rattlesnake and mixed Cu-Au-Ag-Pb-Zn in Brassie skarn.
- Year-round roads, exposed bedrock, semi-arid climate, power nearby, and a mining service town 60 km away.
History
EXPLORATION RECORD
- Same Guichon Creek Batholith that hosts Highland Valley and Getty; same Nicola carbonate–volcanic package that hosts Craigmont-style skarn.
- Two working models on one property: intrusion-centred Highland Valley-type porphyry and contact-related Cu-Fe-Pb-Zn-Ag skarn.
- Roof-zone / border-phase setting — the part of the batholith where both porphyry and skarn fluids typically leak.
- ~800 × 800 m anomaly envelope already outlined by IP chargeability, magnetic lows, resistivity lows and Cu-Mo-As-Hg-Au.
- Lightly drilled: five diamond holes (579 m) plus limited 1979 percussion. The footprint is untested at depth.
- Best historical hole hit the exact limestone–volcanic contact the skarn model predicts: 13.99 m of 0.24% Cu, 1.90% Zn, 0.23 g/t Au.
- 2026 QP confirmation rock grab sampling returned 5,790 ppm Cu at Rattlesnake and mixed Cu-Au-Ag-Pb-Zn in Brassie skarn.
- Year-round roads, exposed bedrock, semi-arid climate, power nearby, and a mining service town 60 km away.
Geology
GEOLOGY & MINERALIZATION
The property sits on the northern edge of the zoned Late Triassic Guichon Creek Batholith. Nicola Group mafic volcanics and limestone are cut by diorite to monzonite bodies and quartz-porphyry plugs, with Ashcroft Formation and Kamloops Group cover to the west and south. Diorite stocks between Permie Lake and Rattlesnake Creek are read as roof-zone, border-phase Guichon.
- Northwest and northeast-trending faults and steep fracture networks control skarn, breccia and vein styles.
- Contact metamorphism has turned limestone to marble and mafic volcanics to magnetic hornfels.
- Mineralization at surface includes copper oxides, chalcopyrite, pyrite, sphalerite and iron-oxide assemblages in veins, stockworks and skarn pods.
- Multi-pulse suite: polymetallic fracture zones in marble, silicified Zn-Ag-Au breccia, magnetite-rich Cu skarn at marble contacts, and precious-metal-bearing garnet skarn lenses.
- At Rattlesnake, a pyritic rhyolite/quartz-porphyry plug hosts stockwork veining, disseminated sulphides and As-Hg pathfinders consistent with the upper shell of a Highland Valley-type porphyry.
Geology models
DEPOSIT MODELS
SLR describes two primary styles that sit side by side, as they do elsewhere on this batholith. Nearby mines and deposits are not necessarily indicative of mineralization on Brassie Creek; the analogues frame the working geological model only.
Highland Valley-type porphyry–epithermal
Intrusion-centred Cu target built around a pyritic rhyolite/quartz-porphyry plug, quartz-vein stockwork, intrusive breccia and an As-Hg-Au pathfinder halo. IP chargeability highs to ~40 ms, magnetic lows along the Rattlesnake Creek Fault, and Cu-Mo soils define an ~800 × 800 m anomaly.
Compared with Valley, Lornex and Bethlehem, Rattlesnake looks like a higher erosional level — the pyritic upper shell or shoulder — with a possible concealed centre at depth under the structure. Getty, ~20 km south, is the same batholith-margin porphyry style: chalcopyrite ± bornite in veins and breccia.
Craigmont-type skarn
Structurally focused Cu-Fe-Pb-Zn-Ag (±Au) skarn along Nicola limestone–volcanic contacts cut by Guichon diorite and felsic dykes. Magnetite bands, chalcopyrite-sphalerite veins, malachite/azurite, epidote-garnet-calcite and magnetite-hematite-calcite pods.
Craigmont, 60 km south, is the district type-example: high-grade magnetite-chalcopyrite skarn on the Guichon–Nicola contact. Brassie adds a broader polymetallic signature (Zn-Pb-Ag-Au) and a 35 m × 200 m silicified limestone breccia, consistent with multiple fluid pulses rather than a single classic Fe-Cu skarn.
Targets
PRIORITY CENTRES
Brassie Creek — skarn
Cu-Fe-Pb-Zn-Ag (±Au) skarn along Nicola limestone–volcanic contacts. Magnetite bands, chalcopyrite-sphalerite veins, malachite/azurite and garnet skarn. Best historical hole: 13.99 m of 0.24% Cu, 1.90% Zn, 0.23 g/t Au, 7.25 g/t Ag. Garnet skarn reported up to 1.54 g/t Au over 3.3 m.
Rattlesnake Creek — porphyry–epithermal
Pyritic rhyolite/quartz-porphyry plug in a ~600 m structural corridor. Stockwork veining, disseminated sulphides, Cu-Mo-As-Hg-Au halo. Historic percussion hole W-79-1: 63.7 m of quartz porphyry with 0.085% Cu over 15 m at the volcanic contact. Mapped as an ~800 × 800 m intrusion-centred anomaly.
2020 VLF-EM intrusive
300 m × 275 m east-dipping resistivity low coincident with mineralized skarn at surface, interpreted as a buried Cu-bearing intrusive. Next logical work is 3D inversion of the 2020 VLF-EM plus ground magnetics over the 2.25 km² Brassie–Rattlesnake corridor.
2026 site-visit confirmation sampling
April Barrios, P.Geo., collected six rock grabs. Brassie-area skarn returned anomalous Cu, Au, Ag, Pb and Zn consistent with mixed porphyry and epithermal fluids. Grab samples are selective and may not represent average grades. Assays by ALS Kamloops (ICP and fire assay). Source: SLR Tables 12-1 and 12-2.
Sample | Site | Au ppm | Ag ppm | Cu ppm | Pb ppm | Zn ppm |
BC-002 | Trench A-A1 marble + malachite | 0.027 | 2.3 | 2,360 | 1,155 | 570 |
BC-003 | Magnetite skarn, Trench A-A1 | 0.088 | 6.5 | 826 | 710 | 835 |
BC-004 | Rattlesnake oxidized host | 0.135 | 3.2 | 5,790 | 15 | 203 |
Summary
Brassie Creek is an early-stage Cu-Au exploration project on the northern Guichon margin, 15 km from Highland Valley, ~20 km from Getty and ~36 km from New Afton.
Two deposit models sit in one structural corridor: a Highland Valley-type porphyry at Rattlesnake and a Craigmont-type polymetallic skarn at Brassie.
Surface work and historical drilling already sit on the predicted contacts. The 800 × 800 m porphyry anomaly and the VLF body under the skarn have not been drill-tested at depth.
Field conditions are straightforward: roads year-round, bedrock out, a mining town 60 km east.
World Copper was granted the option to earn a 100% interest in the Project (the “Option“) by issuing 140,000 common shares on a post-consolidation basis, paying C$440,000, and spending C$750,000 over up to three years, subject to a 2% net smelter return royalty (NSR), of which 1% may be purchased for C$1.5 million. Because the 20-for-1 share consolidation effective July 17, 2026, fell within four months of the first share payment to the vendor, that tranche remains 100,000 post-consolidation shares. The unpaid tranches are adjusted to 10,000, 10,000, and 20,000 shares. The Company has no present ownership interest in the Project. If the Company does not meet the Option payment schedule, the Option will terminate and the Company will not retain any interest in the Project.
Link to Definitive Agreement news release: https://worldcopperltd.com/2026/02/25/world-copper-signs-definitive-agreement-to-acquire-brassie-creek-project-in-british-columbia/
Technical disclosure
Information on this page is primarily derived from the independent NI 43-101 Technical Report on the Brassie Creek Porphyry-Skarn Cu-Au Project, effective and signed April 15, 2026, prepared by SLR Consulting (Canada) Ltd. Qualified Persons: Catherine Fitzgerald, M.Sc., P.Geo., and April Barrios, B.Sc., P.Geo. Readers should refer to the full report. Nearby mines and deposits are not necessarily indicative of mineralization on the Brassie Creek Project. Historical results pre-date current Company work.
