This technical report describes the mineral processing and metallurgical testing program for the Lagunas Norte gold mine in the La Libertad Region, Peru.
Report context
This technical report, dated March 16, 2012, was prepared for Barrick Gold Corporation under NI 43-101 standards. The report documents the mineral resource and reserve estimates, mining methods, and recovery methods for the Lagunas Norte operation. The project number is 1681.
Processing route
Process Description
The recovery methods section of the report describes the process employed at Lagunas Norte. The report contains a section titled "Process Description" under Section 17 Recovery Methods, but does not include detailed flowsheet diagrams or specific equipment listings.
Metallurgical Testing
Section 13 of the report covers Mineral Processing and Metallurgical Testing. The metallurgical testing program was conducted to support the process design and operational parameters for the operation. No specific testwork results, sample types, or laboratory details are provided in the extracted evidence.
Mineral Resource Estimation
The resource estimation methodology incorporates geological models, geological domains, grade domains, density data, cut-off grades, assay statistics with capping of high grades, compositing, contact plot analysis, variography, and resource estimation validation procedures. Resource classification criteria are defined, and resource estimates are validated using established techniques.
Key reported parameters
| Parameter | Value | Basis |
|---|---|---|
| Project Number | 1681 | Report identification |
| Report Date | March 16, 2012 | Issue date |
| Mine Location | La Libertad Region, Peru | Report scope |
| Owner | Barrick Gold Corporation | Client |
| Report Standard | NI 43-101 | Regulatory framework |
| Resource Classification | Defined | Report Section 14 |
| Reserve Estimation | Included | Report Section 15 |
| Mining Method | Open pit | Report Section 16 |
| Recovery Method | Process description | Report Section 17 |
Project website: https://www.barrick.com/English/news/news-details/2021/barrick-reaches-agreement-to-sell-the-lagunas-norte-mine/default.aspx
Technical qualifications
The technical report was prepared as a National Instrument 43-101 compliant document. The processing sections reference a "Process Description" but do not provide complete flowsheet details, performance data, or specific equipment specifications. The metallurgical testing section is referenced as Section 13 but detailed testwork results are not included in the available evidence. The report is based on information available as of March 2012 and does not show subsequent operational changes or developments.
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Source: Technical Report on the Lagunas Norte Mine, La Libertad Region, Peru, NI 43-101 Report, March 16, 2012, Sections 13, 14, 15, 16, and 17.
