Canada

Lynn Lake Project

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Categories

Overview

Mine TypeOpen Pit
StagePermitting
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Mine Life... Lock
SnapshotLynn Lake is one of the highest-grade open-pit gold deposits in Canada.

On March 6, 2023, the Company announced that the federal Environmental Impact Assessment for the Lynn Lake Gold Project had been completed and a positive Decision Statement had been issued by the Minister of Environment and Climate Change Canada.

Work on the updated Feasibility Study is nearing completion.

Owners

SourceSource
CompanyInterestOwnership
Alamos Gold Inc. 100 % Indirect
Alamos owns the development-stage Lynn Lake Gold Project

Contractors

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Deposit type

  • Vein / narrow vein

Summary:

Both MacLellan and Gordon deposits can be considered as belonging to the class of gold deposits referred to as orogenic.

Gold and silver mineralization can be geochemically anomalous to economic at the MacLellan site, Gordon area as well as the Burnt Timber – Linkwood areas of the southern belt. Gold is usually associated with pyrrhotite-pyrite mineralization and often with minor chalcopyrite, sphalerite, galena and arsenopyrite. Gold mineralization is often associated with narrow quartz and quartz carbonate veins and within semi-massive sulphide lenses 1 to 20 cm thick. Gold is usually very fine grained and is rarely visible and appears to be structurally controlled. The structures, usually quartz veins, are eastwest trending.

At MacLellan and Burnt Timber gold-bearing structures dip steeply to the north and are hosted in mafic flows and sediments. Gold seems to be associated with carbonate and silica alteration.

With respect to MacLellan, the high-strain-zone and accompanying hydrothermal alteration localized to the picrite flows and minor intercalated sediments, coupled with its chemical trapping characteristics created favourable conditions for gold mineralization. Hastie (2014) emphasizes the importance of brittle D4 structures, with supporting evidence for a second hydrothermal fluid event. The first gold-silver mineralizing episode, during ductile D2 shearing and alteration, is characterized by biotite ± quartz ± sulphide alteration and shows goldpyrrhotite-pyrite mineralization. The second episode of gold- silver mineralization exhibits fracture-fill Au, arsenopyrite, galena, and sphalerite, associated with D4 faulting and hydrothermal fluids with Cr- clinochlore + carbonate ± hornblende + quartz alteration. A significant increase in gold-silver mineralization near the intersections of D2 shear zones and D4 faults is noted throughout the MacLellan deposit.

At Gordon, gold is often associated with quartz veins cutting folded and contorted Iron Formation, trending east-west and dipping shallowly to the south. Au mineralization is normally trapped in sulfide replacement zones averaging 2.4 m wide, associated with thin, centimetrescale quartz- sulfide veins and breccia veins. In places, coarse gold flecks are observed within these quartz veins and in iron-carbonate altered fragments within breccia veins. Strong ironcarbonate – chlorite – amphibole alteration is related to some high grade veins.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnitsAvg. AnnualLOM
Silver koz 1,263
All production numbers are expressed as metal in doré.

Operational metrics

Metrics
Daily processing capacity 7,000 t *
Stripping / waste ratio 7.3 *
Waste tonnes, LOM 195,188 kt *
Ore tonnes mined, LOM 26,803 kt *
Total tonnes mined, LOM 221,991 kt *
Tonnes processed, LOM 26,803 kt *
* According to 2017 study.

Production Costs

CommodityUnitsAverage
Total cash costs (sold) Gold USD 645 / oz * **  
All-in sustaining costs (sold) Gold USD 745 / oz * **  
Assumed price Silver USD 16 / oz *  
Assumed price Gold USD 1,250 / oz *  
* According to 2017 study / presentation.
** Net of By-Product.

Operating Costs

Currency2017
OP mining costs ($/t milled) USD 17.8 *  
Processing costs ($/t milled) USD  ....  Subscribe
Total operating costs ($/t milled) USD  ....  Subscribe
* According to 2017 study.

Project Costs

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscribe
Sustaining CapEx $M USD  ......  Subscribe
Total CapEx $M USD  ......  Subscribe
OP OpEx $M USD  ......  Subscribe
Processing OpEx $M USD 287.1
G&A costs $M USD 141.1
Total OpEx $M USD  ......  Subscribe
Mining Taxes $M USD  ......  Subscribe
Income Taxes $M USD  ......  Subscribe
Royalty payments $M USD  ......  Subscribe
Net revenue (LOM) $M USD  ......  Subscribe
After-tax Cash Flow (LOM) $M USD  ......  Subscribe
After-tax NPV @ 0% $M USD  ......  Subscribe
After-tax NPV @ 5% $M USD  ......  Subscribe
After-tax IRR, %  ......  Subscribe
After-tax payback period, years  ......  Subscribe

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 27, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 27, 2023

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