On June 25, 2026, Irving reported significant assay results from newly discovered feeder-style mineralization at its Omu Sinter epithermal gold-silver project located in Omu, Hokkaido, Japan.
Beyond the Headline
On June 25, 2026, Irving reported significant assay results from newly discovered feeder-style mineralization at its Omu Sinter epithermal gold-silver project located in Omu, Hokkaido, Japan. Diamond drill hole 26OMS-002, a 53m vertical hole drilled near the eastern margin of the sinter target, intersected 0.98 g/t Au and 68.96 g/t Ag (2.06 g/t AuEq) over 47.7m from the top of bedrock and continuing to the end of the hole. Included within this intercept is a higher-grade subinterval grading 4.05 g/t Au and 54.71 g/t Ag over 7.0m with a further subinterval of 10.68 g/t Au and 187.81 g/t Ag over 1.05m. The Company notes that silver is notably elevated in this newly discovered zone.
This is the first reported instance of such high-grade mineralization being encountered in the shallow geologic environment at Omu Sinter. Before hole 26OMS-002, no hydrothermal feeder had been identified. The Company is in the process of filing applications for an aggressive drill program to follow up on this important discovery.
Hole 26OMS-001, drilled 70m northwest of hole 26OMS-002, intersected a 22.18m interval of silica sinter grading 0.56 g/t Au and 10.36 g/t Ag (0.72 g/t AuEq). Both holes had high silica values of 97.6% SiO2 (26OMS-01) and 91.7% (26OMS-02) SiO2.
This is a very significant discovery, the first in a shallow environment. As noted by the Company, this bodes well for the discovery of a more substantial deposit at depth. It is within the boiling zone in epithermal systems that bonanza grades can occur. This prime area typically occurs at a few hundred metres depth. An aggressive drill program is planned to test the deeper part of this zone later in the comment.
Comment
This is a very fascinating project in a geological region known to host numerous epithermal gold deposits, including the Hishikari Mine, which is one of the world’s richest and highest-grade operating gold mines, widely regarded as the benchmark for low-sulfidation epithermal gold deposits. The Irving properties, despite having historic production dating from centuries ago, have had little modern exploration. The potential to outline near-surface high-grade gold deposits in zones of high silica that are very attractive to base metal smelters in Japan makes these properties very attractive targets for exploration with the potential for low-cost mining down the road. Definitely one to watch.
Figure 1
Source: Irving Resources
Plan map showing location of diamond drill holes and cross section A-A’ at Omu Sinter. (Irving Resources Press Release June 25, 2026).
Figure 2
Source: Irving Resources
Cross section A-A’ looking northwest. Diamond drill traces are shown with g/t AuEq assays in colours.(Irving Resources Press Release June 25, 2026).
