Overview
Stage | Permitting |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Mine Life | 24 years (as of Jan 1, 2023) |
The Uatnan Project, one of the world’s largest graphite projects in development, aims to develop the Lac Guéret graphite deposit.
The Report 2023 presents the results of the PEA for the Uatnan Project which includes the mine and beneficiation plant for the production of approximately 500 ktpa of graphite concentrate. |
Latest News | Mason Resources Announces Closing Of The Sale Of The Lac Guéret Property To Nouveau Monde Graphite January 31, 2024 |
Source:
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On January 31, 2024, Nouveau Monde Graphite Inc. acquired 100% of Lac Guéret property from Mason Resources Inc.
Contractors
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Summary:
Geology
Graphitic metasediments are concentrated in the Lac Guéret Member above the Sokoman Fm iron deposits. Graphite also occurs in minor amounts in the adjoining Sokoman Fm near the contact, but most of the potentially economic graphite lies within the Member. This relationship is common in the district with examples at Lac Knife (QC) and the Mart Lake graphite showing at the Kami iron deposit (Labrador City, NL). Graphite formed as beds within clastic sedimentary basinal deposition under anoxic conditions that preserved the organic carbon and precipitated primary sulphides, mainly pyrrhotite, which is intimately intermixed with the graphite. Sulphides are limited to this depositional regime and do not occur in the host rocks outside of the graphite deposits. Upper amphibolite (kyanite facies) metamorphism affected all the rocks.
The conformation of the formations, including the graphite and iron oxide deposits, was modified by upward of five periods of Grenville-related deformations. The second and third events most strongly control the placement of the deposits into belts aligned northeast and dipping moderately to steeply southeast. Gentle cross-folding created interference fold patterns that affected the foliation dips. The deposits are essentially foliation-parallel. Late extension caused local recrystallization of host rocks, but with no significant remobilization of minerals. At this time, pyrite was formed from some of the original pyrrhotite.
Summary:
The mining method selected for the Project is a conventional open pit, truck and shovel, drill, and blast operation. Vegetation, topsoil, and overburden will be stripped and stockpiled for future reclamation use. The Mineral Resources and waste rock will be mined with 9 m high benches, drilled, blasted, and loaded into rigid frame haul trucks with backhoe excavators.
Waste rock will be hauled to the mine rock stockpiles ("MRS") and managed with the tailings storage facility ("TSF"), located to the northwest of the open pit. Subsequent engineering phases will select appropriate tailings and waste rock management placement methods and technologies to enhance operational and closure performance according to industry standards (Earth system and O’Kane, 2020). To minimize the environmental footprint of the Project, when possible, waste rock will be backfilled into the mined out open pit. The mine will be operated by an owner fleet, seven days per week, 24 hours per day and be comprised of a four-crew system working on a 2-week in, 2-week out rotation.
Open Pit Design
Since the Project is at a PEA level, BBA did not complete a detailed pit design by adding access ramps and catch benches on the pit walls. A simplified ultimate pit surface was generated following the selected optimized pit shell as a guide and considering an overall pit slope of 50 degrees. The pit is approximately 1,500 m long and 750 m wide at the surface, with a total surface area of t ........
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Flow Sheet:
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Pipelines and Water Supply
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Reserves at January 10, 2023:
Mineral Resources are stated at a cut-off grade of 5.75% Cg.
Category | Tonnage | Commodity | Grade | Contained Graphite |
Measured
|
19.02 Mt
|
Graphite
|
17.9 %
|
3.4 Mt
|
Indicated
|
46.62 Mt
|
Graphite
|
16.9 %
|
7.89 Mt
|
Measured & Indicated
|
65.64 Mt
|
Graphite
|
17.2 %
|
11.3 Mt
|
Inferred
|
17.82 Mt
|
Graphite
|
17.2 %
|
3.07 Mt
|
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