This Preliminary Economic Assessment describes a proposed open-pit mining and processing operation for quartz at the Silicon Ridge Project in Quebec, Canada, supported by metallurgical testwork and a conceptual process flowsheet.
Report context
The Silicon Ridge Project is a quartz property located in Quebec, Canada, owned by Rogue Resources Inc. The NI 43-101 Technical Report was prepared with an effective date of September 14, 2016, and an issue date of October 26, 2016. The report presents a Preliminary Economic Assessment (PEA) that includes mineral processing and metallurgical testing, recovery methods, and a conceptual process plant design. No mineral reserves are stated in this report. The study is based on information available at the time of preparation, data supplied by outside sources, and the assumptions, conditions, and qualifications set forth in the report.
Processing route
Mineral processing and metallurgical testing
The report includes mineral processing and metallurgical testing as described in Section 13.0. Mineralogical and chemical analyses were conducted on samples from the project. Sample definition work was performed to characterise the material for processing. Processing results were reported specifically for silicon and ferrosilicon applications. The testwork was used to support the process design assumptions for the Preliminary Economic Assessment.
Recovery methods
Section 17.0 of the report outlines the recovery methods for the proposed process plant. The process plant is described with a simplified flowsheet and process description. The flowsheet and process description are presented at a conceptual level appropriate for a PEA. No detailed operating data from a historical plant is provided in the report, as the project has not been in production.
Proposed process plant design
The recovery methods section describes the process plant design that was developed for the study. The plant layout is included in the report. Utilities for the proposed plant are discussed in Section 17.3. The process design is based on the metallurgical testwork results and is intended to produce a quartz product suitable for silicon or ferrosilicon applications. The flowsheet is simplified and represents the conceptual design used for cost estimation in the PEA.
Infrastructure
Section 1.15 of the report addresses infrastructure requirements for the project. The infrastructure includes the process plant and associated facilities. No additional details on infrastructure are provided in the processing sections of the report beyond what is linked to the plant layout and utilities.
Key reported parameters
| Parameter | Unit | Value | Basis |
|---|---|---|---|
| Process plant design | – | Conceptual | PEA flowsheet |
| Product application | – | Silicon / ferrosilicon | Metallurgical testwork |
| Metallurgical testing | – | Completed | Mineralogical and chemical analyses |
| Sample processing results | – | Reported for Si/FeSi application | Testwork |
| Plant layout | – | Presented | PEA design |
| Utilities | – | Discussed | PEA design |
Project website: https://transition.inc/silicon-ridge-in-quebec/
Technical qualifications
This report was prepared as a National Instrument 43-101 Technical Report for Rogue Resources Inc. by Met-Chem, a division of DRA Americas Inc. The quality of information, conclusions, and estimates contained in the report is consistent with the level of effort involved in Met-Chem’s services, based on: i) information available at the time of preparation, ii) data supplied by outside sources, and iii) the assumptions, conditions, and qualifications set forth in this report. This report can be filed as a Technical Report with Canadian Securities Regulatory Authorities pursuant to National Instrument 43-101, Standards of Disclosure for Mineral Projects. Except for the purposes legislated under Canadian securities laws, any other uses of this report by any third party are at that party’s sole risk. The process design is based on a Preliminary Economic Assessment and is not supported by feasibility-level engineering. No mineral reserves are estimated in this report.
Source: Silicon Ridge Project – PEA NI 43-101 Technical Report, effective September 14, 2016, issued October 26, 2016. Relevant sections: 1.10, 1.14, 1.15, 13.0, 17.0, Important Notice.
