Altitude Minerals reported encouraging aircore drill results at its Byrock Project in NSW, confirming copper-gold porphyry signatures and advancing a joint venture with Nimrod Resources. In Nevada, the company validated high-grade silver-gold targets at Firenze, readying a 2,600m RC drill program.
- Positive pathfinder elements at Byrock indicate porphyry copper-gold system
- Stage One earn-in with Nimrod Resources secured for Byrock Project
- Firenze Project drill targets validated with full permits secured
- Experienced US geologist appointed to lead Nevada exploration
- Infill geophysics completed to optimise NSW drilling plans
Porphyry Copper-Gold Signals at Byrock Confirmed
Altitude Minerals (ASX:ATT) has taken a significant step forward at its Byrock Project in New South Wales, with aircore drilling revealing key pathfinder elements such as antimony, arsenic, bismuth, tellurium, selenium, tin, tungsten, and molybdenum. These elements, combined with pervasive propylitic alteration, align with the alteration halo typical of copper-gold porphyry systems, underpinning the company's geological model of a north-west extension of the Macquarie Arc beneath cover.
Three of the seven Pipe Targets (P38, P37, P01) have been prioritised for follow-up reverse circulation (RC) drilling after assays showed elevated gold values up to 0.15 g/t and strong alteration signatures. Meanwhile, the first-ever drillhole at Target T55 intersected a calc-alkaline monzodiorite porphyry intrusion with widespread propylitic alteration, providing direct geological evidence supporting Altitude’s interpretation of the Macquarie Arc extension.
These encouraging results have prompted Altitude to advance to Stage One of its Earn-in and Joint Venture Agreement with Nimrod Resources Limited, committing to spend $1.35 million over two years to earn a 51% interest in the Byrock tenements. The company also issued Nimrod $200,000 worth of shares as part of this progression.
Geophysical Surveys Sharpen Drill Targeting at Byrock
To optimise upcoming RC drilling, Altitude completed 775 infill gravity stations and 92 line-kilometres of passive seismic surveys across the Pipe Targets and T55. These high-resolution datasets will be integrated with existing airborne magnetics and petrology studies to refine depth predictions and drill collar placements. Processing of this data is underway, setting the stage for a focused drill campaign later this year.
The Byrock Project’s location within the Macquarie Arc; a region hosting world-class mines such as Newmont’s Cadia and Evolution Mining’s Northparkes; adds strategic weight to these findings. The area has attracted substantial exploration investment, including a $195 million commitment by AngloGold Ashanti to nearby Kincora Copper and Inflection Resources, highlighting the region’s potential.
Firenze Silver-Gold Project Nears Drilling in Nevada
Across the Pacific, Altitude has advanced the Firenze Silver-Gold Project in Nevada, a high-grade epithermal system with historical rock chip assays featuring up to 1,825 g/t silver and 43.9 g/t gold. After detailed CSAMT and drone magnetic surveys, structural and alteration mapping, and 3D geological modelling, the project is now drill-ready with all permits secured from the Bureau of Land Management.
The company plans a fully permitted 2,600-metre RC drilling program targeting a 1.2-kilometre NW-SE structural corridor, aiming to test near-surface to 250 metres depth. A key objective is to identify the boiling zone where bonanza-grade mineralisation often concentrates.
Supporting this effort, Altitude appointed Gabe Graf as Principal Geologist – USA. Graf brings over 17 years of experience, including senior technical roles at Newmont Mining Corporation and Northern Star Resources, and was involved in the discovery of significant deposits such as the Goodpaster Gold Deposit in Alaska.
Corporate Activity and Financial Position
Altitude continues to review new gold, silver, and copper opportunities, especially in Nevada, to build a robust pipeline of drill targets. The company is also divesting non-core assets, such as parts of its Eromanga Basin heavy mineral sands project, to focus resources on high-potential projects.
As of 31 March 2026, Altitude Minerals held a cash balance of $1.3 million, having spent $221,000 on exploration activities during the quarter. Executive and director fees paid to related parties totalled $119,000. The company’s strategic focus remains on advancing projects efficiently to drill-ready status with minimal delay.
Altitude’s recent progress builds on its earlier milestones, including the positive aircore results at Byrock and the confirmation of the porphyry intrusion at T55. Meanwhile, the Firenze drill permits secured mark a key step towards unlocking Nevada’s silver-gold potential.
Bottom Line?
Altitude Minerals is transitioning from early-stage exploration to targeted drilling across two continents, with upcoming RC programs in NSW and Nevada set to test compelling porphyry and epithermal systems.
Questions in the middle?
- Will follow-up RC drilling at Byrock confirm economic copper-gold mineralisation?
- How will the 2,600m Firenze drill program refine the understanding of silver-gold mineralisation depth and extent?
- What new opportunities might Altitude identify in Nevada to complement its existing projects?