11 February 2026 | West Perth, Australia
Diablo Resources Limited (ASX: DBO) has identified priority drill targets at its Star Range Silver–Antimony Project in Utah, USA, and confirmed shallow copper mineralisation at its 100%-owned Phoenix Copper Project, also in Utah.
The Company has secured Arizona-based TMC Geophysics to undertake a ground-based Dipole-Dipole Induced Polarisation (DDIP) survey over the high-priority STAR-01 magnetic anomaly at the North Star Prospect. The survey is scheduled to commence in February and is designed to refine drill collar locations ahead of maiden drilling.
Recent rock sampling at North Star returned high-grade silver, antimony, copper and gold results, including:
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3,043 g/t Ag and 1.37 g/t Au
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1,592 g/t Ag and 0.7% Sb
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2,311 g/t Ag and 0.4% Sb
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2.6% Cu and 198 g/t Ag
The STAR-01 magnetic anomaly is associated with an intrusive–sediment contact considered prospective for skarn and carbonate-replacement mineralisation (CRD systems). The proposed IP survey will model resistivity and chargeability to depths of approximately 300 metres below surface, supporting accurate drill targeting.
CEO, Lyle Thorne commented:
“The upcoming commencement of IP at North Star is an exciting step towards finalising our maiden drilling program. The proposed IP survey will provide models of resistivity and chargeability from surface to a depth of approximately 300m below surface enabling accurate drill targeting.
Our wide spaced, first pass drilling at Fair Dinkum has delivered highly encouraging results, intersecting copper-silver mineralisation in several holes at shallow depths confirming that copper-silver mineralisation associated with the Flying Diamond Fault continues eastwards into the project area. The fault has been traced for over 1,000m in the project providing further drill targets.
Copper prices touched their highest level on record in late January 2026, joining the rally seen in precious metals that lifted gold and silver to their own all-time highs. The copper price rise appears driven by slowing mine output and booming demand from electrification – from the AI-revolution to renewable energy generation.”
Phoenix Copper Project: shallow copper mineralisation intersected
At the Fair Dinkum Prospect within the Phoenix Copper Project, Diablo completed eight RC drill holes targeting outcropping copper mineralisation along strike from the producing Lisbon Valley Copper Mine.
Drilling intersected copper mineralisation over approximately 300 metres of strike, open to the east and at depth. Notable intercepts include:
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9.2m @ 0.26% Cu, 18 g/t Ag and 6.1m @ 0.55% Cu, 6 g/t Ag (STRC-01)
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12.2m @ 0.35% Cu, 13 g/t Ag and 4.5m @ 0.41% Cu, 7 g/t Ag (STRC-06)
Copper mineralisation occurs as oxides (malachite and azurite) and sulphides (chalcocite) hosted in altered sandstones and conglomerates of the Dakota and Burro Canyon Formations.
The results support Diablo’s interpretation that the regionally significant, copper-mineralised Flying Diamond Fault extends into the Stateline Project area, providing over 1,000 metres of prospective strike.
At the nearby Philadelphia Prospect, two shallow holes were completed, with PHIL25-12 intersecting 3m @ 0.33% Cu from 50m downhole, associated with the Philadelphia Fault.
The Phoenix Copper Project comprises 315 unpatented lode claims covering approximately 6,300 acres in Utah and Colorado, located along strike from the producing Lisbon Valley Copper Mine within a Tier-1 US copper district.
Further drilling is planned to define the extent and geometry of mineralisation across both project areas.
About us:
About Diablo Resources Limited
Diablo Resources Limited (ASX:DBO) is an Australian-listed exploration company focused on the discovery and development of critical and base metals in the United States. The Company’s portfolio is anchored by the Star Range Project in Utah, a silver-antimony-copper system located in a historically prolific mining district, where Diablo is advancing multiple high-grade targets toward maiden drilling.
Diablo also holds the Phoenix Copper Project, further strengthening its exposure to U.S.-based critical and industrial metals. With projects located in a stable, mining-friendly jurisdiction and aligned with U.S. domestic supply chain priorities, Diablo is pursuing systematic exploration to unlock district-scale potential across its asset base.
Contact details:
Lyle Thorne
Chief Executive Officer
Email: [email protected]