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Natural resources

Sonoro Gold Corp. Submits Revised Environmental Impact Statement for Cerro Caliche Gold Project in Mexico

Strategic Insights

— 2 min read

Sonoro Gold Corp. has submitted a revised Environmental Impact Statement, or Manifestacion de Impacto Ambiental ("MIA"), to the Mexican federal permitting authority, SEMARNAT, in an effort to optimize the project's footprint and enhance social and environmental stewardship. The revised MIA supersedes the prior MIA submitted in May 2022 and includes revisions such as an enhanced mine plan, additional environmental baseline studies, and socio-economic assessments. The company's President and CEO, Kenneth MacLeod, emphasized the importance of meeting Mexico's strict environmental requirements and the company's commitment to the local community.

Key Takeaways:

  • The revised MIA for the Cerro Caliche project has been submitted to SEMARNAT, with a focus on optimizing the project's footprint and enhancing social and environmental stewardship.
  • The revised MIA supersedes the prior MIA submitted in May 2022 and includes revisions such as an enhanced mine plan, additional environmental baseline studies, and socio-economic assessments.
  • The company holds 100% of the concession rights for the Cerro Caliche project and has secured 100% of the surface rights to the concessions and surrounding areas as of July 4, 2025.
  • The Cerro Caliche project has a proposed open-pit, heap leach mining operation with waste dumps, crushing facilities, heap leach pad, leach solution ponds, gold recovery facilities, haul roads, building structures, and infrastructure.
  • The company has completed 30% of the property's identified mineralized zones, with 498 drill holes, 17 trenches, and assays for 53,865 meters of the drilled data.
  • The updated Mineral Resource Estimate (MRE) filed in March 2023 indicates a broadly mineralized low-sulphidation epithermal vein structure and more than 25 northwest-trending gold mineralized zones along trend and near surface.
  • The Preliminary Economic Assessment (PEA) filed in October 2023 demonstrates the potential viability of a 9-year open-pit, heap leach mining operation with an after-tax net present value discounted at 5% (NPV 5) of US $47.7M and an Internal Rate of Return (IRR) of 45% at a gold price of US $1,800 per ounce.

Statistics:

  • 30% of the Cerro Caliche project's identified mineralized zones have been drilled and assayed.
  • 498 drill holes, 17 trenches, and assays for 53,865 meters of the drilled data have been completed.
  • The proposed Cerro Caliche gold project has a 9-year open-pit, heap leach mining operation.
  • The after-tax net present value discounted at 5% (NPV 5) of the project is US $47.7M at a gold price of US $1,800 per ounce.
  • The Internal Rate of Return (IRR) of the project is 45% at a gold price of US $1,800 per ounce.

Sources:

  • Sonoro Gold Corp. (TSXV: SGO | OTCQB: SMOFF | FRA: 23SP)
  • National Instrument 43-101 (NI 43-101)
  • SEMARNAT (Secretaria de Medio Ambiente y Recursos Naturales)
  • Globe Newswire (GLOBE NEWSWIRE)
  • SEDAR (Systems for Electronic Document Analysis and Retrieval)

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