Resolution Minerals completes three holes at Golden Gate with encouraging sulphide mineralisation. Second rig arriving next week to accelerate 13,700m program targeting gold-tungsten.
Alpha Score of 59 reflects moderate overall profile with moderate momentum, strong value, weak quality, moderate sentiment.
Resolution Minerals (RML.AX) has completed three holes for 763 metres as part of a 13,700m diamond drilling campaign at the Golden Gate prospect within its Horse Heaven project in the US. The company observed “highly encouraging” sulphide mineralisation – pyrite and arsenopyrite – associated with intense alteration of a granite, large-scale shearing, brecciation, and areas of intense veining across all three holes. Those same features appear in well-mineralised holes at Golden Gate North, supporting the view that the deposit may extend southward into previously untested ground.
The three holes target tungsten-gold mineralisation south of the Golden Gate South prospect. Technical lead geologist Bill Breen said the style and extent of alteration and sulphides matched zones that elsewhere at Golden Gate carry significant gold and tungsten.
The coincidence of gold and tungsten in the same system matters because tungsten is a critical mineral for defence and industrial applications, and gold provides a liquid by-product hedge. The company believes the mineralisation is open-ended in all directions, suggesting scalability if the geological model holds through the balance of the program.
The 2026 Golden Gate drilling program comprises 45 holes for up to 13,700m, supported by two MP1500 rigs at Golden Gate South and Golden Gate North. Drilling is designed to test extensions of a 500m x 600m coincident gold-tungsten soil anomaly and areas targeted by historical tungsten mining.
Key program stats:
Tungsten exploration at Golden Gate dates to the late 1940s, with open-pit mining starting in the early 1950s. Ore was initially processed at the Stibnite mine, mill and smelter until its closure in 1952. The area was last mined in 1980, and composite samples from stockpiles held at the recently acquired Johnson Creek mill site returned assays of up to 1.85% tungsten trioxide (WO₃). That historical grade provides a reference point for what the current program may encounter.
Golden Gate sits adjacent to Perpetua Resources’ Stibnite gold-antimony development, a project that has drawn attention for its antimony and gold resources. The proximity adds a potential strategic angle for Resolution: if the tungsten-gold system extends toward the Stibnite deposit, the combined critical-mineral profile could attract offtake or partnership interest.
To fast-track the current program, a second drill rig has arrived on site, and Resolution expects it to start turning early next week. The acceleration of the drilling campaign means assay results from the first three holes will likely be followed by a steady stream of data over the coming months. The key decision point for traders will be whether the sulphide alteration seen in the first three holes translates into grade and width in the assays, and whether later holes extend the mineralisation into the untested parts of the soil anomaly.
For a small-cap explorer like Resolution, the market often reprices on each assay release rather than on lithological observations alone. The second rig also increases the rate of capital burn, so investors will want to see results that justify the accelerated spend.
Resolution’s broader Horse Heaven project also includes the Antimony Ridge prospect, where the company recently reported a 99.38% purity milestone in antimony processing. That news underscored Resolution’s ability to upgrade critical minerals, and the Golden Gate drilling now tests the tungsten-gold side of the same district. The combined antimony-tungsten-gold-silver portfolio gives the company exposure to multiple critical metals in a single jurisdiction (Idaho, US).
The next concrete catalyst is the second rig spinning – expected within days – followed by assay results from the first three holes. If the sulphide visual cues match the grade seen in historical stockpile samples (up to 1.85% WO₃), the Golden Gate prospect could shift from exploration-stage to resource-stage valuation. If assays disappoint, the market will likely wait for the 45-hole program to finish before reassigning value.
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