Altitude Minerals Ltd (ASX: ATT) provides a final exploration and drilling update for 2025, following an active and highly productive year across the Company’s Heavy Mineral Sands, Copper-Gold, and Silver-Gold portfolios in Australia and the United States.
The Managing Director has just returned from a field trip to Nevada, where the Company completed further drill-target refinement at the Firenze Silver & Gold Project, progressed logistics and contractor discussions, and reviewed multiple advanced gold, silver and copper opportunities with potential to complement the existing project pipeline.
2025 has been a transformational year for Altitude Minerals, with a strong pipeline of drill-ready targets established and three drilling programs completed in the last months of the year. The Company enters 2026 with momentum, defined drill programs, and multiple near-term catalysts, including recent positive HM results, pending assay results and upcoming drilling.
Eromanga Basin, South Australia
Eromanga HMS Project
December activities
- Positive results reported in ASX Announcement 15/12/2025 “HMS Intersected in first drilling program Nilpinna Target
Upcoming Activities
- Follow up ground magnetic surveys to inform further drill targeting
- Anticipated grant of new tenements currently under application to strengthen the Company’s ground position
Byrock Copper Gold Project
December activities
- 419m of rotary mud & diamond core drilling completed testing the high-priority T55 Cu-Au Porphyry Target – East Byrock
- Seven priority pipe targets tested with 2,228m of low-cost aircore drilling
- All air-core samples submitted for assay
Upcoming Activities
- Core cutting and assay preparation
- Assay results expected in two batches
- Follow-up program design and prioritisation subject to results
Theseus Copper Gold Project
December activities
- Continued with administrative transfer of three key tenements from Rimfire Pacific
- Landowner engagement
Upcoming Activities
- Finalise tenement transfer paperwork
- Drill target ranking
- Permitting and planning for drill target testing
Firenze Silver & Gold Project
December activities
- Detailed structural mapping and drill-target refinement
- On-ground verification of access and logistics
- Integration of alteration mapping data to refine priority drill positions
Upcoming Activities
- CSAMT geophysical survey confirmed for January 2026
- Completion of soils and rock-chip interpretation
- Finalisation of drill collars and permitting
- 2,500m RC drill program planned for March-April 2026, subject to permitting and rig availability
Alaska, USA
December activities
- Relogging core and digitising of historical data
Upcoming Activities
- Consulting gold expert to report
MORE INVESTOR UPDATES

Compelling Drill Targets Defined at Byrock Project, NSW
Compelling RC drill targets have been confirmed at the Byrock Project to test for
Macquarie Arc pencil (pipe-like) porphyry deposits

Investor Presentation: RIU Resources Roundup Conference (May 2026)
Altitude Minerals – Investor Presentation

Altitude Secures Another Significant Gold & Silver Project in Nevada
Exclusive Option to Purchase the Gold & Silver W-Project near Winnemucca, complementary to Altitude’s 100% owned Firenze Silver & Gold Project, Nevada
Quarterly Activities Report: March 2026
Catch up on all the latest Activities with this Quarterly Report

Firenze Drill Targets Confirmed and Drill Permits Secured
Altitude Minerals Ltd is pleased to announce the appointment of Mr Gabe Graf as Principal Geologist – USA, effective immediately.

Geophysical Surveys Completed at the Byrock Project, Macquarie Arc, NSW
75 infill gravity stations and 92-line km of passive seismic have been acquired in total over the Pipes Targets and T55 Target in the last month as a validation step