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Canada
Lac des Iles Mine

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

  Address:
585 Chem. du Graphite O
Las-des-Iles
Quebec, Canada
J0W 1J0
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2023
Lac des Iles mine (LDI) consists of an open pit graphite mine and a processing facility.

Subsequent to September 30, 2022, the Company acquired a 100% interest in the Mousseau West graphite project. The project is located approximately 80 kms from LDI graphite mine. Mousseau West has the potential to extend the mine life at LDI and increase its production back to nameplate capacity of 25,000 tpy.
Latest NewsNorthern Graphite Resumes Processing at North America's Only Producing Graphite Mine Amid Rising Market Demand     November 1, 2023


Owners

Source: p. 2
CompanyInterestOwnership
Northern Graphite Corp. 100 % Indirect
On April 29, 2022, the Northern Graphite Corp. acquired 100% ownership of the producing Lac-des-Îles graphite mine in Quebec (“LDI”). The acquisition of LDI was completed as a direct asset purchase with the assumption of certain liabilities and the business’s employees through the Company’s wholly-owned subsidiary Graphite Nordique Inc.

Contractors

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Deposit Type

  • Metamorphic
  • Stratabound


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:

- subscription is required.


Production:
The production values for 2022 present operational highlights for two months in the second quarter when the mine first came under Northern’s ownership and the rest of 2022.

Production values for 2021 include January to June.

CommodityUnits20222021202020192018
Graphite kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required13
All production numbers are expressed as concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2022202020192018
Annual production capacity  ......  Subscription required
Stripping / waste ratio  ......  Subscription required6.63 4.53 11.4
Ore tonnes mined  ......  Subscription required80,224 t219,647 t178,294 t
Waste  ......  Subscription required532,104 t994,871 t2,028,161 t
Total tonnes mined  ......  Subscription required612,328 t1,214,518 t2,206,455 t
Tonnes processed  ......  Subscription required
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Reserves at April 30, 2021:
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 %

Commodity Production Costs:

CommodityUnits2022
Cash costs (sold) Graphite CAD  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2022
Revenue M CAD  ......  Subscription required
After-tax Income M CAD  ......  Subscription required
Book Value M CAD  ......  Subscription required
Subscription required - Subscription is required


Water Supply
Source: Subscription required

- subscription is required.


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
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 22, 2021
....................... Subscription required ....................... Subscription required Subscription required May 11, 2023
....................... Subscription required ....................... Subscription required Subscription required May 29, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Corporate Presentation 2022
Fact Sheet 2022
Financial Review 2022
Management Discussion & Analysis 2022
Preliminary Economic Assessment 2022
Press Release 2022
................................... Subscription required 2021
Subscription required - Subscription is required.

News:

NewsDate
Northern Graphite Resumes Processing at North America's Only Producing Graphite Mine Amid Rising Market Demand November 1, 2023
Northern Graphite Confirms Potential to Extend Mine Life at Lac Des Iles October 6, 2023

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