CUMBERLAND DEPOSIT

The Cumberland deposit is on the west-limb of the Eskay anticline approximately 12 km south of the Lulu Zone on the southern wall of the Sulphurets Creek valley. The mineralized zone occurs near the Eskay Rhyolite-Willow Ridge mafic unit contact (Figure 8), the same stratigraphic position that hosts the Eskay Creek deposit. This suggests that the Cumberland VMS system formed during the same time period as Eskay Creek. The presence of the auriferous sulphide minerals at the rhyolite-basalt contact suggests Au prospectivity on the west limb of the Eskay anticline continues to the south.

Figure 8: Down-dip stratigraphic section of the Cumberland VMS deposit and Bench area based on the data collected in 2020.

The Eskay Rhyolite-Willow Ridge contact was intercepted by drill hole CBL05-06 (Figure 9). The interval 28.66-33.53 m is a mudstone with sparse flattened black pebbles (< 5 mm). Historic assays from this mudstone interval range from 1.00-1.97 g/t Au. Rhyolite breccia replaced with semi-massive sulphide minerals occurs from 35.55-43.07 m. Historic assays from the mineralized rhyolite breccia range from 0.20-7.83 g/t Au. The stratigraphic position of the mudstone and rhyolite breccia along the west limb of the Eskay anticline is consistent with a VMS hydrothermal system at the Contact Mudstone horizon.

Figure 9: Samples from the contact mudstone horizon at Cumberland in drill hole CBL05-06. A. CBL05-06 33.23-33.43 m is a sheared mudstone with flattened pebbles and a pronounced S-C fabric. Sulphide minerals are concentrated along the S surface. The interval containing this sample assayed 1.93 g/t Au and 48.7 g/t Ag. B. CBL05-06 33.53-33.73 m is basalt with sulphide minerals filling small fractures. The interval containing this sample assayed 0.11 g/t Au and 10.9 g/t Ag. C. CBL05-06 37.00-37.30 m is a rhyolite breccia with abundant sulphide replacement minerals. The interval containing this sample assayed 5.64 g/t Au and was overlimit with Ag at >100 g/t.