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Cobalt, Mica, and Beyond 3TG

Extended Minerals

Extended Minerals Due Diligence (Cobalt, Mica, and Others)

Supply chain due diligence is expanding beyond the original four conflict minerals. Cobalt, mica, and other minerals face growing regulatory scrutiny and customer-driven responsible sourcing requirements. The Extended Minerals Reporting Template (EMRT) provides a structured framework for collecting due diligence data on these additional minerals.

What you receive

EMRT Packages & Due Diligence Reports

We deliver complete extended minerals documentation packages including validated EMRTs, processor verification reports, supply chain mapping, and customer-ready reporting for cobalt, mica, and other covered minerals.

  • Full EMRT collection, validation, and rollup across your supplier base
  • Cobalt and mica processor identification and risk assessment
  • Integration with existing 3TG programs for unified reporting
  • EU Battery Regulation readiness documentation
Extended Minerals Reporting Template prepared by The 3TGs
Who it applies to

Companies whose products contain cobalt (batteries, electronics, superalloys), mica (electronics, automotive, cosmetics), or other minerals subject to responsible sourcing expectations. This increasingly includes EV battery manufacturers, electronics companies, and any supplier responding to OEM extended minerals questionnaires.

Key requirements
  • Collect and validate Extended Minerals Reporting Templates (EMRTs) from suppliers
  • Map cobalt and mica supply chains to the smelter and refiner level
  • Assess sourcing risks against OECD Due Diligence Guidance
  • Report on extended minerals as part of broader responsible sourcing programs
  • Respond to customer-specific extended minerals questionnaires and data requests
  • Monitor evolving regulatory requirements (EU Battery Regulation, CSDDD)

Regulatory landscape

  • EMRT is maintained by the RMI as the standard reporting template for cobalt and mica
  • EU Battery Regulation introduces mandatory cobalt due diligence for battery supply chains
  • EU CSDDD (Corporate Sustainability Due Diligence Directive) covers broader human rights and environmental due diligence
  • OECD Guidance applies to all minerals from conflict-affected and high-risk areas, not just 3TG
  • Customer-driven requirements are often stricter than current regulatory mandates
Common compliance gaps
  • Treating extended minerals as optional because they are not yet subject to SEC-equivalent reporting rules
  • Not collecting EMRTs alongside CMRTs during the same supplier outreach campaign
  • Limited visibility into cobalt supply chains beyond Tier 1 suppliers
  • Not tracking the EU Battery Regulation timeline and its due diligence requirements
  • Responding to customer extended minerals requests reactively instead of maintaining a continuous program
  • Missing mica in supply chain assessments because it is present in unexpected applications
How The 3TGs helps
  • EMRT deployment, collection, and validation across your supplier base
  • Cobalt and mica supply chain mapping to the smelter and refiner level
  • Integration of extended minerals into existing 3TG due diligence programs
  • Alignment with OECD Due Diligence Guidance for all covered minerals
  • Supplier outreach campaigns for extended minerals data collection
  • EU Battery Regulation readiness assessment for cobalt supply chains
  • Customer-facing reporting and documentation for extended minerals

Need extended minerals support? We integrate cobalt, mica, and other minerals into your existing due diligence program.

Contact Us →

info@3tgs.org · +44 20 3996 3623