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Canada
Silicon Ridge Project

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 Location:
39 km N from Baie-Saint-Paul, Quebec, Canada

  Project Contacts:
150 King St. W. Suite 200
Toronto
Ontario, Canada
M5H 1J9
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Silica
Mining Method
  • Truck & Shovel / Loader
Mine Life20 years (as of Jan 1, 2017)
The Company submitted the application for the bail d’exploitation minière permit (“BEX”) in the form and content as described in Québec’s Mining Act for its Silicon Ridge project. Based upon communications with the representatives of the Ministère de l'Énergie et des Ressources Naturelles (“MERN”), Rogue had provided all the required information for the Ministry to complete the application process except for the requirement that the MFFP provides its decision on the Section 128.7 Authorization.


Owners

Source: p. 25, 51
CompanyInterestOwnership
Rogue Resources Inc. 100 % Direct
Pursuant to an option agreement dated August 15, 2014, Rogue acquired an option to earn a 100% interest in the Property for a payment of 8.5 million shares.

Contractors

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Deposit Type

  • Metamorphic


Summary:

The quartzite on the Property is of the metamorphic type, of probable sedimentary origin, and occurs as large-amplitude folds formed in response to multiple episodes of folding. The exploration model used by Rogue for the deposits on the Property primarily relies on field mapping, the positive topography resulting from the erosion-resistant quartzite, and the lack of magnetic susceptibility of the quartzite, in contrast with the geophysical signature of the magnetic paragneiss in the footwall of the “G” unit and in the hangingwall of the “H” unit.

The Property hosts several map-scale units that correspond to high purity quartzite. However, Rogue selected two units (“G” and “H”) as the best drilling targets for further development. The “G” unit extends along a NE direction through the central point of the Property, whereas the “H” unit is about 250 m to the NW, in the northern sector of the Property. The width of the “G” quartzite unit varies along strike, but reaches a maximum of 260 m, with an average of 150 m.

The quartzite on the Property is generally coarse-grained, massive, locally fractured. It may contain traces of biotite, muscovite, hematite, magnetite, ilmenite, fuschite, rutile commonly associated with coloured quartzite. Clusters of sillimanite with pyrite were occasionally observed.

The different impurities cause the changes of colour in the quartzite. In the case of iron, fine hematite or magnetite crystals impart a pervasive pin ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

SNC-Lavalin evaluated the potential for a quarry operation at Silicon Ridge to feed the direct ship feed with 180 kt per year of silica mineralization.

The mining method selected for this Project is a conventional truck and shovel, drill and blast quarry operation. Vegetation, topsoil and overburden will be stripped and stockpiled for future reclamation use. The mineralized material and waste rock will be mined with 5 m high benches, drilled, blasted and loaded into rigid frame haul trucks with hydraulic excavators.

The seasonal quarry operation is based on the contractor operating 5 days per week, 12 hours per day, and 6 months of the year during the warmer seasons. Overburden removal may take place during the winter to take advantage of the frozen ground conditions. Two of the three Resource pits were designed for the Silicon Ridge project in order to target 20 years of production at 200 kt of blasted resource per year from the South West (SW) and the North East (NE) pit. The Central North (CN) pit was not designed for the 20 year plan due to a higher overburden depth than in the NE pit, although it is still within the Resource Estimate. The quarry has a nominal capacity to extract 200 kt per year of run of mine to produce approximately 180 kt per year of lump silica.

The SW pit is approximately 635 m long and 170 m wide at surface with a maximum pit depth from surface of approximately 105 m to a bottom of 885m elevation. The total surface ........


Crushing and Grinding


Processing


Summary:

The silica product will be ROM with crushing and directly shipped. The silica products will be crushed and screened by a contractor to minus 120 mm (top size) and 20 mm (bottom size). The 2016 PEA Study included a processing plant for separating a low grade product, which is no longer in the mine plan.

This study includes mine operations separating low grade material for stockpiling to keep marketing options open, but does not address processing of a secondary processed product. SNC-Lavalin recommends Rogue complete market analysis of potential end users as the planning process progresses in the future to determine if changes in the market warrant producing a secondary low grade product. In the event that no low grade product is added to the project, the low grade stockpile will remain as a mineralized waste dump/stockpile, designed to long term geotechnical design parameters.

Recoveries & Grades:

CommodityParameterAvg. LOM
Silica Recovery Rate, % 90
Silica Head Grade, % 98.6

Projected Production:

CommodityUnitsAvg. AnnualLOM
Silica t 180,0003,420,000
All production numbers are expressed as mineral.

Operational Metrics:

Metrics
Stripping / waste ratio 2 *
Annual mining capacity 200 kt of ore *
Waste tonnes, LOM 7,888,301 t *
Ore tonnes mined, LOM 3,950,000 t *
Total tonnes mined, LOM 11,838,301 t *
Tonnes processed, LOM 3,800,000 t *
* According to 2017 study.

Reserves at May 23, 2017:
Cut-off grades of 98.1% SiO2, 0.80% Al2O3, 0.075% TiO2 and 0.24% Fe2O3.

CategoryTonnage CommodityGrade
Measured 2.5 Mt Silica 98.62 %
Indicated 5.3 Mt Silica 98.62 %
Measured & Indicated 7.7 Mt Silica 98.62 %
Inferred 2.1 Mt Silica 98.66 %

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs Silica CAD 24.5 / t *  
Assumed price Silica CAD 50 / t *  
* According to 2017 study / presentation.

Operating Costs:

Units2017
OP mining costs ($/t milled) CAD 13.7 *
G&A ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2017 study.
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2017 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Closure costs $M CAD  ......  Subscription required
Total CapEx $M CAD  ......  Subscription required
OP OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 14.2
G&A costs $M CAD 20.4
Total OpEx $M CAD  ......  Subscription required
Total Taxes $M CAD  ......  Subscription required
Royalty payments $M CAD  ......  Subscription required
Gross revenue (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
After-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 10% $M CAD  ......  Subscription required
Pre-tax NPV @ 8% $M CAD  ......  Subscription required
After-tax NPV @ 10% $M CAD  ......  Subscription required
After-tax NPV @ 8% $M CAD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 13, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 13, 2023
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Corporate Filings & Presentations:

DocumentYear
Management Discussion & Analysis 2022
Preliminary Economic Assessment 2017
Preliminary Economic Assessment 2016
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