Resolution Minerals (ASX:RML) Builds Momentum with Tungsten-Gold Drilling and Gold Recovery Results

Highlights

• RML has launched a major 2026 drilling campaign at the Golden Gate prospect, with up to 45 drill holes planned across 13,700 metres.
• The drilling program is targeting the expansion and continuity of gold and tungsten mineralisation at both Golden Gate North and Golden Gate South.
• Resolution Minerals is also advancing tungsten exploration, supported by historical stockpile assays grading 1.85% WO₃.
• Initial metallurgy tests delivered gold recovery rates of up to 95.5% for oxide material and nearly 89% recovery for sulphide samples.

Resolution Minerals Ltd (ASX:RML) (OTCQB:RLMLF) has launched a major drilling campaign at its Golden Gate prospect within the Horse Heaven Antimony-Tungsten-Gold-Silver Project in Idaho, USA, marking the launch of an extensive 2026 exploration program. The company confirmed that an MP1500 diamond core drill rig has commenced operations, with plans for up to 45 drill holes covering 13,700 metres.

Alongside drilling activities, the company also reported encouraging results from initial gold metallurgy testing, including high recovery rates from both oxide and sulphide samples.

Diamond Drilling Begins at Golden Gate

The newly commenced drill program is focused on identifying the scale and continuity of gold and tungsten mineralisation across the Golden Gate North and Golden Gate South targets. The campaign aims at expanding known mineralised zones while also evaluating extensions of the system. The program will follow up on previous results including 189.2m @ 1.30 g/t Au from 34.1m to 223.4m.

The first drill hole is already underway, representing the start of one of Resolution Minerals’ largest planned exploration campaigns at the project. The Golden Gate prospect is positioned adjacent to the Stibnite Gold Project, owned by Perpetua Resources, which recently secured permitting for antimony and gold development activities.

Focus on Tungsten Expansion Targets

The company is also targeting tungsten zones that were previously mined at Golden Gate. Historical stockpile samples, stored at the Johnson Creek mill site, returned assays grading 1.85% WO₃, supporting renewed exploration interest in the area.

Drilling activities are aimed at identifying potential extensions of tungsten mineralisation surrounding the historical mine workings at Golden Gate. At Golden Gate South, the company plans to test a large 500m by 600m target area that contains a coincident gold and tungsten soil anomaly.

Gold Metallurgy Tests Deliver High Recoveries

Metallurgy test work undertaken by IMO Labs in Perth produced encouraging gold recovery results from composite drill core samples collected at Golden Gate.

Testing on gold-bearing oxide material achieved 94.2% and 95.5% gold recoveries through direct leaching at grind sizes of 150 and 75 microns respectively after 24 hours of leaching. Residual gold levels after 48 hours remained low, with recoveries ranging between 92.7% and 93.8%.

Sulphide flotation testing also generated positive outcomes. At a grind size of 106 microns, sulphide samples delivered 86.4% recovery with concentrate grades reaching 49 g/t gold. Further testing at 75 microns improved recovery to 88.7%, although concentrate grades declined.

The company stated that additional reagent optimisation and cleaner flotation testing are now underway to refine concentrate grades and maximise recovery performance.

Board and Investors Attend Idaho Site Visit

Resolution Minerals’ board members and major investors recently visited the Horse Heaven project site, where they observed the first drill hole of the 2026 campaign being drilled. The visit highlighted the commencement of field operations and ongoing exploration activities across the project area.

The start of the 2026 Golden Gate drill program marks a significant exploration phase for Resolution Minerals as the company advances both its gold and tungsten targets in Idaho. With drilling now underway and initial metallurgy tests reporting high gold recoveries, the company is progressing efforts to define the scale of mineralisation across the Golden Gate system.

RML shares were trading 3.08% higher at AUD 0.067 per share at the time of writing on 15 May 2026.