Mammoth Minerals reported significant shallow gold intercepts at its Excelsior Springs project in Nevada, expanded its landholding with the Imperial Gold Project acquisition, and completed the Paterson divestment, positioning itself for further exploration growth.
- Multiple high-grade, shallow gold intercepts at Excelsior Springs
- Imperial Gold Project acquisition expands Nevada tenure to 135km2
- Paterson copper-gold project divestment completed with retained interest
- Ongoing mapping and sampling identify new precious and critical mineral targets
- Cash position at $4.1 million with $1.29 million spent on exploration
Strong Drilling Results Reinforce Carlin-Style Potential at Excelsior Springs
Mammoth Minerals (ASX:M79) has delivered a fresh wave of promising drilling results from its flagship Excelsior Springs gold project in Nevada, underscoring the potential for a large-scale Carlin-type mineral system. Reverse Circulation (RC) and Diamond drilling along the Buster Gold Trend returned multiple significant shallow intercepts, including 33.54m at 1.25g/t Au from surface and 12.20m at 2.56g/t Au from surface, highlighting both the grade and continuity of mineralisation near surface.
The results validate the company’s evolving geological model, which departs from the previously assumed epithermal-style deposits in the Walker Lane Trend and instead aligns with Carlin-style fault and collapse breccia structures in altered sedimentary units. This shift opens the door to substantial scale potential, supported by a large intrusive body north of the Buster Trend within Mammoth’s tenements. The current drill targets cover only 1.3km of a prospective 7km strike, signalling considerable upside for resource expansion.
These latest assays build on the company’s recent exploration momentum, as documented in the expanding gold zones at Nevada’s Excelsior Project, which confirmed continuity and open extensions down-dip and along strike.
Imperial Gold Project Acquisition Broadens Nevada Land Package
In a strategic move to consolidate its footprint, Mammoth secured an exclusive option to acquire the Imperial Gold Project, located just 5km northeast of Excelsior Springs. This former high-grade producer boasts historic drill intercepts such as 13.72m at 4.74g/t Au including 3.05m at 17.20g/t Au, underscoring its advanced exploration status and potential for rapid development.
The acquisition, combined with direct staking activities, expands Mammoth’s contiguous landholding in Nevada to 135km2, including claims covering significant parallel structures within the Blue Dick Project area. The Blue Dick trend itself has delivered exceptional polymetallic rock chip results with silver grades exceeding 5,900g/t and gold up to 42.1g/t, reinforcing the project’s precious and critical mineral credentials.
This expansion was previously highlighted in the company’s announcement on Nevada gold footprint expansion with Imperial Mine option, where the potential for multiple undrilled targets was emphasised.
Paterson Divestment Completes, Refocusing on US Gold and Silver
Mammoth completed the divestment of its Paterson copper-gold project to London-listed Cloudbreak Discovery PLC (LSE: CDL), receiving 300 million shares and retaining a 10% free-carried interest until a positive Definitive Feasibility Study is completed. This transaction enables Mammoth to sharpen its focus on advancing the rapidly evolving pipeline of targets at Excelsior Springs and other US-based precious metals projects.
The divestment aligns with the company’s strategic pivot documented in the Paterson divestment and Nevada drilling surge, which freed capital and management bandwidth to accelerate exploration in Nevada.
Ongoing Exploration Across Americas Portfolio
Beyond Nevada, Mammoth’s exploration footprint spans South Dakota, Canada, and Peru. The Bella Gold Project in South Dakota, situated near the historic Homestake Mine, continues to reveal high-grade surface samples and mining disturbances, with mapping and resampling underway to assess deeper potential.
In Canada, the Skyline Copper Project in Newfoundland is under review for commercial opportunities, with historic Volcanogenic Massive Sulphide (VMS) mineralisation confirmed at the Governor’s and Earl’s Targets. High-grade copper rock chips up to 18.19% Cu support a Cyprus-style VMS model, with further geophysical targets identified through recent magnetics and IP surveys.
Meanwhile, Peru’s Picha and Charaque projects benefit from advanced geophysical surveys and mapping programs. Picha, part of BHP Xplor’s 2025 accelerator program, shows a compelling intrusive-related copper-silver system with drill permitting advancing for the Ichucollo target. Charaque, with a history of artisanal silver-lead mining, is under consideration for a corporate transaction as Mammoth refines its portfolio.
Financial Position and Outlook
Mammoth ended the March quarter with a cash balance of $4.1 million AUD and no debt, having spent $1.29 million on exploration and evaluation activities. Related party payments totalled $132,000 for director salaries and consulting fees. With a solid cash runway estimated at 2.6 quarters based on current expenditure, the company is positioned to continue its aggressive exploration strategy, particularly focused on its US gold and silver assets.
Managing Director Glenn Poole emphasised the significance of the Nevada drilling results and land acquisitions, noting the early-stage but encouraging nature of the mineralisation and the multiple targets identified through combined geological and geophysical work. The company’s shift towards US-based precious metals projects is starting to yield a robust pipeline of opportunities, with critical minerals potential also emerging at Blue Dick.
Bottom Line?
Mammoth Minerals’ expanding Nevada footprint and encouraging drill results set the stage for potential resource growth, but the scale and economic viability of these targets remain to be demonstrated through further drilling and evaluation.
Questions in the middle?
- How will upcoming drilling phases extend the Buster Trend’s strike and depth potential?
- What impact will the Paterson divestment have on Mammoth’s capital allocation and exploration focus?
- Can the Imperial Gold Project acquisition accelerate resource definition and project development timelines?