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Canada
Lac des Iles Mine

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 Location:
18 km S from Mont-Laurier, Quebec, Canada

  Address:
Box 279
Manotick
Ontario, Canada
K4M 1K7
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2023


Owners

Source: p. 1,2
CompanyInterestOwnership
Northern Graphite Corp. 100 % Indirect
Northern Graphite Corporation announces that it has closed its previously announced acquisition (December 2, 2021) of the producing Lac des Iles graphite mine (“LDI”) in Quebec from a subsidiary of Imerys SA.

As consideration for the acquisition of LDI, which was completed through the Company’s wholly-owned subsidiary Graphite Nordique Inc., the Company paid Imerys approximately CDN$17.8 million in cash and issued to Imerys US$4 million worth of units. The units each consisted of one common share and one-half of one share purchase warrant and had the same CDN$0.75 price and other terms as the equity offering described below, resulting in the issuance to Imerys of 6,841,600 common shares and 3,420,800 warrants. The common shares, warrants and common shares issuable on exercise of the warrants are subject to a four month resale restrictions under Canadian securities laws expiring on August 30, 2022.

Contractors

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Deposit Type

  • Metamorphic


Summary:

Graphite mineralization at the Quarry is hosted in a strongly folded marble unit within a paragneiss host rock, and mineralization is characteristic of flake graphite. Internal waste units of paragneiss and intrusive rocks have been identified within the marble. The fold hinge line is oriented approximately north-south and the hinge plane dips to the east at approximately 40° to 50° to nearly horizontal towards the south end of the deposit. Unconsolidated Pleistocene deposits are widespread in the area and overlay the deposit.

The mineralization consists of large graphite flakes and is commonly associated with regular banding of paragneiss, conforming to beds. The protolith is thought to comprise a clayey-carbonate sandstone. A change in the depositional environment resulted in the precipitation of a carbonate platform rich in organic matter with variable carbon content. A subsequent event of terrigenoussedimentation deposited sandstone with clay horizons on top of the carbonaceous carbonate platform.

High pressures and temperatures associated with the Grenville orogeny transformed the sedimentary protoliths to biotite gneiss, graphitic limestone marbles, and garnet gneiss that outcrop at the Quarry. The graphite mineralization is thought to be associated with the transformation of organic matter during metamorphism together with the contribution of deep fluids rich in CO2 resulting in graphitic limestone marbles. Slow cooling of the mineralized materia ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining of mineralized material and waste rock is carried out by both Imerys employees and long-term contractors using conventional open pit methods consisting of the following activities:

• Pit wall clean-up and mechanical scaling by Imerys personnel using a small excavator fleet.
• Pit wall control and production drilling by drill contractor Forexplo Inc. (Forexplo) using conventional production drills.
• Blast tie-in and initiation completed by Imerys personnel. All other blasting related tasks are completed by Orica Canada Inc. (Orica) or Forexplo.
• Loading and hauling operations performed by Imerys personnel with front-end loader, hydraulic excavators, and rigid frame haulage trucks.
• Primary production equipment is supported by smaller front-end loaders, excavators, a dozer, and a grader.

The pit component of the Quarry has a maximum annual production rate of 235,000 tpa (1,000 tpd) of graphite-bearing material. Pit 2 is the last pit to be mined at the Quarry and is located at the north end of the property. Ore is hauled from active Pit 2 benches to the on-site crusher, a distance of more than two kilometres. Pit 2 mining activities are progressing in a retreat fashion to the north end of the pit, allowing waste backfilling to proceed at the south end of Pit 2/Pit 6.

In line with production requirements and the size of the primary mobile equipment fleet, mining of Pit 2 is completed with 12 m high benc ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:
Production values for 2021 include January to June.

CommodityUnits2021202020192018
Graphite kt  ......  Subscription required  ......  Subscription required  ......  Subscription required13
All production numbers are expressed as concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018
Total tonnes mined  ......  Subscription required1,214,518 t2,206,455 t
Ore tonnes mined  ......  Subscription required219,647 t178,294 t
Waste  ......  Subscription required994,871 t2,028,161 t
Stripping / waste ratio  ......  Subscription required4.53 11.4
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Reserves at December 22, 2022:
The Quarry Mineral Resources and Mineral Reserves are reported at a 4% Cg cut-off grade.

CategoryOreTypeTonnage CommodityGradeContained Graphite
Probable Stockpiles 102,024 t Graphite 6.92 % 7,062 t
Probable In-Situ (OP) 491,741 t Graphite 7.1 % 34,937 t
Probable Total 593,764 t Graphite 7.07 % 41,999 t
Indicated In-Situ (OP) 621 kt Graphite 7.1 %



Heavy Mobile Equipment as of December 22, 2021:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required Leased
Truck (boom) ....................... Subscription required
Truck (haul) ....................... Subscription required 60 t ....................... Subscription required
Truck (haul) ....................... Subscription required 70 t ....................... Subscription required Leased
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 22, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 22, 2022
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Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Preliminary Economic Assessment 2022
Press Release 2022
................................... Subscription required 2021
Subscription required - Subscription is required.

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