Rokmaster Drills Porphyry-Style Molybdenite Mineralization at the Wilson Target at Hanson
Rokmaster Resources Corp. (RKR) has announced initial diamond drilling results from the Wilson Target on its Hanson Property, part of the Nechako Project in British Columbia. The program marks the first drill test of a strong molybdenum anomaly historically detected by Endako Mines. The inaugural program consisted of two drillholes totaling 393.0 meters, with Drillhole H26-02 intersecting notable porphyry-style molybdenite mineralization.
Drillhole H26-02 intersected intrusive breccia with foliated granodiorite and non-foliated porphyritic quartz monzonite. The hole returned the following intercepts:
- High-Grade Interval: 0.518% Mo (0.864% MoS2) over 1.20 meters (59.0–60.2 meters).
- Broader Interval: Weighted average of 0.051% Mo (0.085% MoS2) over 18.2 meters (42.0–60.2 meters). This interval exceeds the average grade of the Endako Mine (0.072% MoS2).
- Wide-Width Interval: 0.023% Mo (0.038% MoS2) over 71.0 meters (42.0–113.0 meters), close to the projected restart cut-off grade used in the Endako Mine PEA.
The mineralization is hosted in dense cm-scale quartz veins and persistent potassic alteration with molybdenite in quartz B-veins. Drillhole H26-01, collared 900 meters west of H26-02, intersected Hanson Phase porphyritic tonalite hosting approximately 5% disseminated pyrite mineralization. It returned elevated copper results of 500–1,600 ppm Cu over meter-scale intervals, confirming a pyrite halo around the Wilson Zone core.
The Wilson Zone is underlain by Stern Creek granodiorite hosting potassic secondary biotite alteration and narrow mm-scale vein-hosted molybdenite mineralization. The target represents a strong and broad soil molybdenum anomaly and coincident IP anomaly initially detected by Endako Mines in 1973.
The company also highlighted exploration potential at the Cyr Zone and Buckley Zone. The Cyr Zone is located 2.5 km north of the Wilson Zone and features strongly sericite-altered and pyritic Stern Creek granodiorite with elevated gold, silver, copper, and zinc, suggesting a less eroded porphyry system. The Buckley Zone is located 4.0 km west of the Wilson Zone and is defined by a large, strong molybdenum anomaly in soil samples over Hanson Phase tonalite.
Additionally, Rokmaster announced the recent approval of a new 1,534-hectare mineral claim, the Chaplin Property, located 8 km south of the Hanson Property. The property is characterized by moderate overburden cover over mapped Stern Creek granodiorite and hosts a strong IP anomaly identified in a 1969 survey, coincident with a magnetic low, which remains undrilled.
Endako Mine, Canada's largest Mo Mine, is located 23 km south of the Hanson Property. Its 2025 Mineral Resource Estimate comprises 335.6 Mt at 0.072% MoS2 (measured and indicated) using a 0.040% MoS2 cut-off and USD$22.50/lb Mo price.
John Mirko, President and CEO, stated: "This first-pass, low-cost drill program at the Wilson Zone has added good value to the Hanson Property by intersecting notable porphyry-style molybdenite mineralization. The high-grade interval of 0.518% Mo over 1.20 m in drillhole H26-02 demonstrates that the system's ability to locally concentrate mineralization in higher-grade vein corridors within a broader envelope of lower-grade mineralization is similar to what has been described at the Endako Mine."
Mirko added: "The location of the 18.2 m interval returning 0.051% Mo, which exceeds the average grade at the Endako Mine, also supports further exploration potential in the geological context of the Wilson Zone. With extensive road access and nearby infrastructure we can continue advancing the Wilson Zone and the other underexplored Hanson Property targets efficiently."