Mammoth Minerals Limited
Mammoth Minerals Limited (formerly Firetail Resources Limited, renamed August 2025; Claremont, WA-headquartered, ASX-listed) is a US-focused gold and critical-minerals explorer. Its flagship is the Excelsior Springs project in Nevada's Walker Lane Trend (a belt that has produced over 40Moz gold), where 2026 drilling at the Buster Gold Trend has returned assays consistent with a Carlin-type deposit model, alongside high-grade sampling at the Imperial Prospect and a maiden drill campaign launched at the Blue Dick target. The company also holds copper/zinc/lithium/silver/lead exploration interests in Australia, Peru and Canada. No resource estimate has yet been published.
Notable vs. Peers
- Financials score of 3.1/10 is weaker than the peer average of 5.3/10.
- Trading within 4% of its 52-week low — weak recent price momentum.
Lifecycle Milestones
Jurisdiction (40%)9/10
Nevada: Fraser PPI 2025 is 100.00 of 100 (rank 1 of 68), which maps to 9 on this site's scale. Nevada, USA -- consistently one of the world's top-ranked mining investment jurisdictions (Fraser Institute).
Infrastructure (40%)No verified figure
Researched with nothing found: no source we could cite confirms or rules out an existing mill, road access, grid power, or tailings facility at Excelsior Springs Gold-Silver Project, Walker Lane Trend, Nevada, USA (checked Sep 30, 2026; recheck due Mar 29, 2027). Counts at a neutral 5/10 until one does.
Nearby producing mine (20%)Not yet researched
No producing mine within 50 km in our reference list (nearest listed: Round Mountain (Kinross Gold Corporation), 146 km). That list doesn't cover every mining district yet, so a longer distance isn't scored as remote.
Acquisition Susceptibility
A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal in the research, a producer that already owns part of the company, is scored from its disclosed strategic shareholders. A producer that is a joint-venture or earn-in partner on the project, rather than a shareholder, isn't captured yet.
How this score is built
- Disclosed pending dealSub-score: Not scored
No pending acquisition or merger disclosed (checked)
Not scored: having no deal in flight isn't held against a company.
Weight 26.25% - Producer's strategic stakeSub-score: Not scored
No producer holds a disclosed stake on file (holder register researched) See holders
Not scored: most juniors that do get bought had no prior toehold, so a missing stake says little either way.
Weight 25% - Distance to a producing mineSub-score:1.8/10
Nearest producing mine: Round Mountain (Kinross Gold Corporation), 146 km
10 next to a producing mine, 8 at 20 km, 5 at 50 km, 0 beyond 200 km.
Weight 22.5% · 46% here - Lifecycle stageSub-score:1/10
Stage: Grassroots Exploration
Feasibility and permitting score 10, where deals cluster, and production 5.5; earlier stages score less, down to 1 at grassroots.
Weight 15% · 31% here - JurisdictionSub-score:9/10
United States: jurisdiction score 9/10
Our jurisdiction score, used as is: higher means lower political and permitting risk.
Weight 6.75% · 14% here - CommoditySub-score:10/10
Primary commodity: Gold
Gold 10, copper 8, silver 5, nickel and uranium 4, others 2: most majors' deals are for gold.
Weight 4.5% · 9% here
Weight is each input's share of the full score. “Here” is its share of this company's score: inputs that aren't scored are left out and the rest re-weighted, never counted as zero.
Your Rankings
Management Team
Managing Director and Chief Executive Officer of Mammoth Minerals Limited, a director since September 19, 2024. Geologist with a proven track record revitalizing mineral assets for ASX-listed companies, holding previous senior roles at Greenstone Resources, Firefly Resources, Northern Star and Superior Gold.
Chief Financial Officer and Co-Secretary of Mammoth Minerals Limited. Chartered Accountant and Governance Institute Fellow with 15+ years in resources and accounting across Australia, New Zealand and the UK.
Non-Executive (and Technical) Director of Macro Metals Limited (ASX: M4M) and Executive Chair of Mammoth Minerals Limited (ASX: M79); also managing director of Geonomics Australia Pty Ltd. Geologist with about 19 years' experience with multi-sized mining and exploration companies across jurisdictions and commodities -- due diligence, corporate structuring, business development, exploration management, acquisitions and divestments, and operational geology; co-founder of Macro's own iron-ore portfolio strategy. Sources: macrometals.com.au/company/board-directors and mammothminerals.com.au/management/.
Insiders, Investors & Smart Money
Notable shareholders and insiders whose involvement is worth knowing about, plus what we're seeing from institutional/large-investor activity.
1832 Asset Management (Scotiabank's Dynamic Funds arm) holds a real 5.06% stake -- a generalist Canadian manager, not a resource specialist, and on the small side of even that band. Beyond that, no named institutional or strategic holder is on record, and the only other substantial-holder event on file this year was someone leaving the register, not joining it. The company recently divested one project and acquired a historic Nevada gold asset, unrelated to this metric.
No notable insiders tracked for this miner yet.
Reports, Presentations & Documents
Mammoth Minerals, formerly Firetail Resources, is a US-focused gold and critical-minerals explorer whose flagship is the Excelsior Springs project in Nevada's Walker Lane trend. Drilling in 2026 along the Buster Gold Trend has returned results the company considers consistent with a Carlin-type model, including 22.9m at 1.37 g/t gold from 10.7m at the Lunchbox Ridge prospect, about 700m along strike from the main Buster mine zone, and a maiden drill campaign has begun at the Blue Dick target. It also holds copper, zinc, lithium, silver and lead exploration interests in Australia, Peru and Canada. No resource estimate has been published.
No reports or presentations linked yet.