Diablo Resources (ASX:DBO) defines drill targets at Star Range silver-antimony project

Diablo Resources has advanced its Star Range Silver-Antimony Project in Utah with the identification of priority drill targets at the North Star Prospect, following completion of an induced polarisation survey.

The work provides a technical basis for the company’s maiden drilling campaign, scheduled for Q2 2026, and marks a transition from surface exploration toward subsurface testing.

Highlights

• IP survey completed over ~9 line km across 4 lines, identifying priority drill targets

• Targets coincide with the STAR-01 magnetic anomaly and surface samples up to 3,043 g/t Ag and 0.7% Sb

• Mineralisation associated with intrusive–sediment contact, a prospective structural setting

• Three priority drill areas defined for initial testing

• No historical drilling recorded across the target area

• Maiden drill program planned for Q2 2026, subject to permitting

The Star Range Project, located ~6km west of Milford in Beaver County, Utah, comprises 238 unpatented lode claims and 1 Utah TLA lease covering ~5,242 acres.

The project sits within a historically productive mining district, proximal to the Horn Silver mine and the Milford Copper Mine, with established infrastructure including roads, rail and nearby power access.

Geologically, the project lies within a Basin and Range setting characterised by block-faulted sediments intruded by granitic bodies, with mineralisation occurring as structurally controlled replacement style systems, breccia veins and skarn zones associated with intrusive contacts.

This geological framework underpins the targeting strategy, with the intrusive–sediment contact emerging as a key control on mineralisation.

The recent IP survey was designed to test this contact zone for concealed mineralisation, with approximately 9 line km of pole-dipole surveying completed and the data processed into 2D and 3D chargeability and resistivity models extending to depths of over 400m below surface.

The results indicate a spatial relationship between chargeability and conductivity anomalies and magnetic intrusive bodies, with responses clustering around structurally favourable settings.

Three discrete drill targets have been defined, with the first targeting a chargeability anomaly supported by adjacent surface samples exceeding 100 g/t Ag.

The second tests a conductor associated with the granite–sediment contact, while the third targets a chargeability anomaly interpreted to represent a continuation of high-grade Ag–Sb–Cu–Au mineralisation identified at surface.

These targets provide the initial framework for the planned drill program.

Importantly, Diablo notes that no historical drilling has been undertaken in the area, positioning the upcoming campaign as the first subsurface test of the system and establishing a clear baseline for exploration outcomes without legacy data constraints.

In the context of exploration sequencing, the program integrates geophysics with surface geochemistry and structural mapping, aligning multiple datasets to prioritise drill locations.

Field work including regional mapping and sampling remains ongoing, alongside permitting activities required for drilling commencement.

CEO Lyle Thorne commented:

“We are very encouraged by the results of the IP survey completed at North Star. The survey has outlined clear anomalies of interest that coincide with known mineralisation and highly prospective geological settings, further reinforcing our view that the North Star Prospect represents a priority drill target.”

Looking ahead, the immediate focus is on finalising drill planning and securing permits ahead of the Q2 2026 campaign, while continuing regional geochemical work across the broader project area and reviewing additional critical mineral opportunities in the United States.

The progression to drilling represents a defined step in the project’s development pathway, shifting the emphasis toward validating the scale and continuity of the identified mineralised system.