Diablo Resources Limited (ASX: DBO; OTCQB: DBORF) has identified nine priority drill targets at its Star Range Silver–Antimony Project in southwestern Utah, USA, following completion and independent interpretation of a high-resolution drone aeromagnetic survey.
The results materially advance drill targeting across the Company’s 100%-owned Star Range Project, confirming depth potential beneath extensive high-grade surface silver-antimony-copper mineralisation in a Tier-1 U.S. jurisdiction. The newly defined targets enable Diablo to fast-track permitting and finalise plans for its maiden drilling program.
North Star emerges as flagship drill target
The North Star Prospect has been identified as the highest-priority target, defined by favourable structural architecture coincident with exceptional surface geochemistry. Rock chip sampling at North Star has returned multiple very high-grade silver and antimony results, including assays up to 3,043 g/t silver, alongside elevated copper and gold.
Magnetic interpretation indicates mineralised trends extending over approximately 3 kilometres of strike, highlighting significant scale potential. The prospect is located proximal to intrusive–carbonate contacts and historical workings, a geological setting analogous to major polymetallic systems elsewhere in the western United States.
Accelerated pathway to drilling
The drone magnetic survey, completed in late 2025 and processed by independent consultants, covered 186 unpatented lode claims over approximately 14.5 km² on Bureau of Land Management–administered land. Integration of the new magnetic data with surface geochemistry and public-domain USGS datasets has allowed Diablo to prioritise multiple untested targets beyond North Star, several of which remain entirely unsampled at surface.
To refine drill collar locations at North Star, the Company plans to complete ground-based induced polarisation (IP) geophysics, capable of imaging sulphide mineralisation to depths of up to 300 metres. A drilling application is being finalised, with regional mapping and sampling continuing in parallel.
Strategic timing amid strong silver and critical metals market
The Star Range Project is located within a prolific historical mining district that has produced silver, gold, copper and base metals, and sits near both the historic Horn Silver Mine and currently operating copper mines. The advancement toward drilling comes amid continued strength in the silver price and increasing U.S. focus on domestic supply of critical and electrification metals.
Management comment
CEO Lyle Thorne commented:
“The interpretation of the drone aeromagnetic survey has confirmed our exploration model and significantly enhanced the potential of existing prospects, most notably North Star.
At the North Star Prospect, magnetics define a structurally prospective zone, which when combined with high-grade Ag-Sb-Cu geochemistry, supports our view that North Star is a compelling drill target. We are extremely encouraged that the magnetic survey targeting confirm our geological model and with the highest ever silver price. The Company’s maiden proposed drilling program is perfectly timed.
With the continuing surge in silver prices and the increasing dependence on copper for electrification and AI, clearly demonstrated by the recent decision by Amazon.com to purchase US domestic copper for the first time in 10 years, the Company is striving to take advantage of this heightened US domestic demand for critical metals via efficient and effective exploration.”
About us:
About Diablo
Diablo Resources Limited (ASX) is a U.S.-focused critical minerals explorer with a portfolio of 100%-owned projects in Utah, targeting commodities designated as strategically important to U.S. economic security and the clean energy transition.
The Company’s flagship assets include the Star Range Silver–Antimony Project and the Phoenix Copper Project, both located in mining-supportive regions with excellent access, infrastructure and a long history of mineral production.
Diablo is led by an experienced technical and corporate team with deep U.S. exploration expertise and is executing a disciplined, discovery-focused strategy aimed at rapidly advancing high-priority targets toward drilling and resource definition.
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