This report details the mineral processing and metallurgical testing program for the Goldfield Property in Nevada, USA, based on a feasibility study update with an effective date of 17 June 2013.
Report context
This technical report constitutes an update to a feasibility study on the Goldfield Property, Nevada, USA, prepared for International Minerals Corporation. The effective date of the resource estimate and update to feasibility study is 17 June 2013, with a signature date of 25 July 2013. The report covers mineral processing and metallurgical testing for the Gemfield deposit, McMahon Ridge, and Goldfield Main zones.
Processing route
Summary
The mineral processing and metallurgical testing section of the report addresses three deposit areas: Gemfield, McMahon Ridge, and Goldfield Main. The testing program was conducted by IMZ (International Minerals Corporation) and is presented as current testing, distinct from any historical or previous testing work.
Previous Testing
The report acknowledges that previous testing had been conducted prior to the current program, though specific details of that earlier work are not elaborated in the processing sections.
Current Testing by IMZ
Gemfield: Testing focused on the Gemfield zone of the Goldfield Property. The metallurgical program was designed to characterize the ore and develop a processing approach suitable for the mineralization encountered at this deposit.
McMahon Ridge: The report indicates that current testing was also performed on material from the McMahon Ridge area, with the objective of understanding the metallurgical response of this separate mineralized zone.
Goldfield Main: Additional testing was conducted on Goldfield Main, completing the evaluation of the three primary deposit areas within the project.
Conclusions
The metallurgical testing program provided sufficient data to support the process design criteria and the process description presented in the report. The conclusions confirm that the testing program met its objectives for all three deposit zones.
Key reported parameters
| Parameter | Value | Basis |
|---|---|---|
| Testing program | Metallurgical testing of Gemfield, McMahon Ridge, and Goldfield Main | Current IMZ testwork |
| Report type | NI 43-101 Technical Report – Update to Feasibility Study | Feasibility study update |
| Effective date | 17 June 2013 | Resource estimate and feasibility study update |
| Process design status | Design criteria established | Based on current testing program |
| Process description | Included in Section 17.0 | Proposed design |
Technical qualifications
This report is a feasibility study update and does not constitute a definitive feasibility study. No capital or operating cost data specific to the processing plant are presented in the processing sections of this excerpt. Performance data, plant throughput rates, recovery assumptions, and economic outcomes are not provided in the mineral processing and metallurgical testing sections. The report clearly separates current testwork conducted by IMZ from previous testing, but does not specify the completion status of the proposed processing plant design. No information is provided regarding current project status, ownership, or operating permits specifically for the processing facilities.
Source: International Minerals Corporation, NI 43-101 Technical Report, “Update to Feasibility Study on the Goldfield Property, Nevada, USA,” effective 17 June 2013, Sections 13.0 and 17.0.
