Mineral commodities
African mineral supply with chain of custody, independent assay, and conflict-free verification. From mine site to export point.
Commodity Plus extends the same verified supply infrastructure to mineral commodities — tin, tantalum, tungsten, gold, cobalt, copper, and lithium. Mine site registry, independent assay results, OECD due diligence records, and full traceability from extraction to export.
Minerals on the platform
Current mineral commodity coverage.
- Tin (Sn)
- Concentrate from Rwanda, DRC, Uganda, and Burundi. Graded by Sn content percentage, typically 70%+ for export-grade concentrate. LME-referenced pricing with origin basis differential.
- Tantalum (Ta)
- Coltan and processed tantalite from DRC, Rwanda, and Ethiopia. Graded by Ta₂O₅ content. Metal Bulletin reference pricing.
- Tungsten (W)
- Wolframite concentrate from Rwanda and DRC. Graded by WO₃ content. Metal Bulletin MTU pricing.
- Gold (Au)
- Artisanal and small-scale mine production from DRC, Uganda, Tanzania, and Kenya. Doré bars and semi-refined. LBMA and Kitco reference pricing. Fairmined and LBMA Responsible Gold certification tracked.
- Cobalt (Co)
- From DRC artisanal and industrial operations. LME-referenced. Particular attention to responsible sourcing and child labour due diligence.
- Copper (Cu)
- Concentrate and cathode from DRC and Zambia. LME-referenced.
- Lithium
- Emerging production from DRC, Zimbabwe, and Mali. Spodumene and brine-sourced.
Coverage expands as verified mine sites and supplier networks are onboarded in active markets.
Compliance infrastructure
The compliance documentation your legal team requires, structured into the transaction.
Mineral commodity trade from Central and East Africa carries regulatory obligations that agricultural trade does not. Commodity Plus builds compliance into the transaction workflow rather than treating it as a parallel paperwork exercise.
- OECD Due Diligence Guidance
- Every mineral supplier and mine site on the platform undergoes due diligence assessment against the OECD five-step framework. Assessment records, risk classifications, and remediation plans are stored on-platform and accessible to buyers.
- EU Conflict Minerals Regulation (2017/821)
- For tin, tantalum, tungsten, and gold imported into the EU, the regulation requires supply chain due diligence. The platform maintains the documentation chain — mine site identification, chain of custody records, independent third-party audits — in the format EU importers need for compliance.
- US Dodd-Frank Section 1502
- Conflict mineral reporting requirements for US-listed companies sourcing 3TG from covered countries. The platform’s chain of custody and mine site data supports the reasonable country of origin inquiry and due diligence processes.
- ITSCI and RMI/RMAP
- For mine sites and supply chains participating in the ITSCI tagging programme or the Responsible Minerals Initiative, tag numbers, audit records, and traceability data are integrated into the platform’s chain of custody records.
Chain of custody
Every custody transfer from extraction to export, recorded and immutable.
Each mineral lot on the platform carries a chain of custody — a sequence of recorded events from extraction at the mine site through to export clearance. Each event captures the transferring and receiving parties, GPS coordinates, material weight, tag and seal numbers, and photographic evidence.
Events are immutable after recording. The chain is visible to both trading parties, to the relevant government mining authority, and to downstream buyers who require traceability for their own compliance obligations.
A typical chain
tagged at mine site → transported to processing facility → received and weighed → processed (washed, separated, concentrated) → transported to export point → received and sealed → export clearance granted → shipped
Assay and quality
Independent laboratory assay results, structured and verifiable.
Mineral quality specifications on Commodity Plus are defined per element — Sn content, Ta₂O₅ percentage, moisture, iron content, radioactivity levels — with contract-specific targets, acceptable ranges, rejection thresholds, and penalty schedules.
Independent assay results from accredited laboratories are recorded with the lab's name, accreditation status, sample reference, and per-element findings against the contract specification. Assay certificates are stored permanently alongside the corresponding chain of custody records.
For radioactive minerals, radiation test results (Bq/kg measurements by gamma spectrometry) are included as standard and compared against import country thresholds.
Mine site registry
Verified mine site profiles with licensing, workforce, and environmental data.
Every mine site supplying commodities through the platform is registered with its government-issued mine code, concession area, licensing status, licence validity period, mining type (artisanal, small-scale, or industrial), estimated workforce, and environmental permit status.
Conflict-free certification status is tracked — which scheme (ITSCI, RMI, LBMA, Fairmined, Kimberley Process), certificate expiry date, and audit history. Mine sites without current conflict-free certification are flagged. Buyers can filter the supplier directory by conflict-free status.
Pricing
Benchmark-referenced with origin-specific differentials.
Mineral contracts on Commodity Plus are priced against published benchmarks — LME for base metals, LBMA for precious metals, Metal Bulletin for minor metals. The contract price is calculated as the benchmark settlement plus or minus an origin-specific differential that reflects concentrate grade, logistics cost, and country risk.
Fixed and floating price structures are available. For floating contracts, the pricing period — settlement date, B/L week average, or buyer-called pricing — is defined in the contract terms.
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