IRVING RESOURCES
Japan
Omu & Yamagano Projects: Geological Background
Irving Resources (IRV · CF) · Japan
Japan-based exploration projects Omu and Yamagano, hosting historic mine workings with no modern exploration…
Share data updated daily
Analysis by Bill Pearson, PhD, P.Geo
Updated Jul 30, 2026
Deep Dive: Omu Project
- 2.98 km² Omui mining license + 56 prospecting licenses covering 171.38 km² This hole was 40m southeast of Hole KLM26-002 which intersected 1.01 g/t Au over 121m from 11m to 132m including 4.61 g/t Au over 3.2 m from 15.2 m and 3.63 g/t Au over 12.8 m from 69.7 m.
- Includes Omu Sinter, Omui and Hokuryu prospects
- Three prospects sit atop gravity highs reflecting graben-bounding structures
- Au, Ag, As, Hg and Sb anomalies at both Omui and Hokuryu
- JX Metals option to earn 75% in Omu Sinter Pit; Irving retains 100% of remainder
Deep Dive: Yamagano Project
- Located ~11 km southwest of the high-grade Hishikari gold mine Includes Omu Sinter, Omui and Hokuryu prospects
- Hosts many historic gold mine workings, some dating back to 1640 AD
- No modern exploration including drilling until recently
- Gold veins associated with anomalously high gravity feature — thought to reflect buried uplift in denser basement sedimentary rocks
- JV: Newmont 60%, Sumitomo 12.5%, Irving 27.5%
NEWS RELEASES
Click any release to read Bill's geological analysis:
Actual holdings will vary for each client or fund and there is no guarantee that a particular account will hold any or all of the securities discussed. All investing involves risk including risk of loss. Crescat target resource estimates (TSE) are based on internal modeling and geologic estimates, and include various assumptions based on analysis of geology, geophysics, geochemistry, historic drill assays, and metallurgical recovery data received to date. TSE are discounted based on drilling progress to date, an assessment of the management and technical team's strengths and weaknesses affecting their ability to advance the project, and environmental, local community, and government permitting risk factors. Estimates are displayed on a gold equivalent basis based on current price-to-gold ratios for silver, copper, and other metals if the primary metal is other than gold. Further drilling, assaying, resource modeling, and engineering studies will be required to determine whether Crescat's TSE can be reasonably expected to be achieved. Crescat's target resource estimates are updated monthly across the entire portfolio. Sources: Crescat Capital LLC, Bloomberg, Issuer. Expected profitability percentile is based on Crescat's geologic estimates of projected grades, recoveries, capex, and operational costs on the primary project compared to the universe of operating mines. This value does not project overall anticipated company profitability.