project · United States
Stibnite Gold
A gold project that would also become the only domestically mined US antimony source.
PermittingPermittingProject score 72
Operator
Perpetua Resources
Country
United States
Mine life
15 yrs
Capex
$1.3B
Profile
Resource, economics and jurisdiction
- Resource
- Gold-antimony resource with strategic by-product significance.
- Production
- Would supply a meaningful share of US antimony demand.
- Economics
- Gold economics carry the project; antimony provides strategic value.
- Infrastructure
- Existing road corridor requiring upgrade; regional grid access.
- Jurisdiction
- Low risk
- Ownership
- Perpetua Resources 100%
- Region
- Idaho
Overview
What this asset is
A gold project that would also become the only domestically mined US antimony source.
Methodology
Earthern Project Score 72
Version v0.1
- Resource Quality
- 72 (weight 1.2) — Grade, continuity and metallurgical complexity of the resource.
- Project Scale
- 80 (weight 1) — Annual output potential relative to the global market for its primary mineral.
- Development Stage
- 68 (weight 0.9) — How far the asset has advanced toward or through production.
- Jurisdiction
- 76 (weight 1.1) — Political stability, permitting predictability and rule of law.
- Infrastructure
- 66 (weight 0.9) — Access to power, water, transport and processing capacity.
- Economics
- 71 (weight 1.2) — Cost position and margin resilience through the price cycle.
- Strategic Importance
- 81 (weight 1) — Relevance to national critical mineral strategies and allied supply chains.
- Supply-Chain Value
- 72 (weight 1) — Whether the asset relieves a genuine downstream bottleneck.
- Sustainability
- 70 (weight 0.9) — Carbon intensity, water use, tailings approach and community standing.
- Execution Risk
- 73 (weight 1) — Technical, financing and schedule risk to reaching nameplate output. Higher is lower risk.
Materials
Minerals produced
Assets