This technical report presents a mineral resource estimate and historical metallurgical testwork for the Santana Project, a gold deposit located in Sonora State, Mexico.
Report context
The NI 43-101 technical report, with an effective date of May 31, 2023, and a report date of October 16, 2023, was prepared for Minera Alamos Inc. The report addresses the mineral resource estimate for the Santana Project in Sonora State, Mexico, and includes information on historical and more recent metallurgical testwork, as well as proposed processing methods.
Processing route
Proposed Recovery Methods
The report describes a proposed processing flowsheet consisting of a portable crushing circuit, heap leaching, solution ponds, and carbon column gold recovery. The crushing circuit is intended to be portable. Ore would be placed on a heap leach pad, and pregnant solution would be collected in solution ponds. Gold recovery from solution would occur via carbon columns.
Historical Testwork (2008,2009)
Historical testwork was conducted during the 2008–2009 period. No specific results or details from this testwork are provided in the report sections made available.
Leach Amenability Testwork (2017)
Leach amenability testwork was conducted in 2017. No specific results or details from this testwork are provided in the report sections made available.
Nicho Norte Test Leach Pad Summary (2017–2019)
A test leach pad program at the Nicho Norte area was conducted during the 2017–2019 period. No specific results or performance data from this program are provided in the report sections made available.
Coarse Bottle Roll Test Program (2020)
A coarse bottle roll test program was carried out in 2020. No specific results or details from this program are provided in the report sections made available.
Nicho Norte Bottle Roll Test Program (2021)
A bottle roll test program for the Nicho Norte area was conducted in 2021. No specific results or details from this program are provided in the report sections made available.
Metallurgical Results Summary and Conclusions
The report contains a section titled “Metallurgical Results Summary and Conclusions” but no specific metallurgical recovery values, conclusions, or recommendations are provided in the report sections made available.
Key reported parameters
The following table summarizes key parameters from the available report sections. Where no specific values are reported, this is noted as “Not reported.”
| Parameter | Value | Basis |
|---|---|---|
| Proposed crushing circuit | Portable | Design description |
| Proposed heap leach | Yes | Design description |
| Proposed gold recovery | Carbon columns | Design description |
| Historical testwork period | 2008–2009 | Historical |
| Leach amenability testwork year | 2017 | Testwork |
| Nicho Norte test leach pad period | 2017–2019 | Testwork (historical operating data) |
| Coarse bottle roll test year | 2020 | Testwork |
| Nicho Norte bottle roll test year | 2021 | Testwork |
| Metallurgical recovery values | Not reported | , |
Technical qualifications
The report is a mineral resource estimate technical report prepared under NI 43-101 standards. The processing and metallurgical sections provide descriptions of proposed design and historical testwork programs, but the available sections do not contain specific metallurgical recovery results, testwork conclusions, or detailed flowsheet performance data. The report explicitly states that no mineral reserve estimates are included in the report (Chapter 15: “Mineral Reserve Estimates” is noted in the table of contents but contains no content in the available sections). The mining methods chapter (Chapter 16) contains only a mine planning section heading with no content provided in the available sections.
Source: Minera Alamos Inc., NI 43-101 Technical Report, Mineral Resource Estimate for the Santana Project, Sonora State, Mexico, effective date May 31, 2023, report date October 16, 2023, Sections 13, 15, 16, and 17.
