Canada

Eleonore Mine

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Overview

Mine TypeUnderground
StatusActive
Commodities
  • Gold
Mining Method
  • Transverse open stoping
  • Open stoping
  • Longitudinal retreat
Backfill type ... Lock
Production Start... Lock
Mine Life... Lock
SnapshotÉléonore is a world-class, state-of-the-art facility that is among the largest gold mines in Quebec.

Based on a comprehensive review of Newmont’s portfolio of assets following the Newcrest acquisition, the Company’s Board of Directors approved a portfolio optimization program to divest six non-core assets and a development project in February 2024. The non-core assets to be divested include Éléonore, Cripple Creek & Victor, Akyem, Porcupine, Musselwhite, Telfer, and a development project in Canada. In February 2024, the Company concluded that these non-core assets and the development project met the accounting requirements to be presented as Held for Sale in the first quarter of 2024. The sale is probable and will be completed within 12 months.

Owners

SourceSource
CompanyInterestOwnership
Newmont Corp. 100 % Indirect
Éléonore is 100% owned by Newmont through its wholly-owned subsidiary, Goldcorp Canada Ltd.

Contractors

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Deposit type

  • Breccia pipe / Stockwork
  • Sediment-hosted

Summary:

The Éléonore operation is comprised of 368 mining claims and one mining lease, issued under the Quebec Mining Act, encompassing 48,210 acres (19,511 hectares). Éléonore is a clastic sediment-hosted stockwork-disseminated gold deposit

The Éléonore Operations host the Roberto gold deposit, which consists of the Roberto, East Roberto, and Zone du Lac lenses.

The Roberto deposit is a clastic sediment-hosted stockwork-disseminated gold deposit.

The Roberto deposit has historically been divided into the Roberto, Roberto East, Zone du Lac, North and Hanging Wall Zones. This nomenclature is based on their geographical location and the main alteration types observed. All of the zones are made up of many individual mineralized lenses.

The host rock of the mineralized zones is typically a thinly-bedded greywacke (bed thickness approximately 10 cm) near the contact with a massive greywacke unit, and locally, with a thin conglomerate unit. The steeply east-dipping Roberto East fault, marked by a thin black tourmaline marker band, forms the eastern limit of the mineralized vein cluster.

The structural hanging wall of the mineralized zones is characterized by a greywacke containing centimetre-scale aluminosilicate porphyroblasts overlain by a thin conglomerate unit. The aluminosilicate-bearing greywacke and the conglomerate appear tightly folded, with axes generally oriented in the east–west direction and refolded by the F2 event. This folding is in sharp contrast with the generally north– south-trending bedding in the mineralized zones. The structural footwall of the mineralized zones is characterized by greywacke, locally exhibiting a higher metamorphic grade, which contains a higher amount of pegmatite dikes and quartz veins.

The bulk of the gold mineralization at the Roberto deposit includes a wide range of mineralization styles (Fontaine et al., 2015a):
- Stockwork of quartz, dravite veinlets with microcline, phlogopite, and sulphides;
- Replacement zones (microcline, phlogopite, dravite) with traces of pyrrhotite, arsenopyrite, and rare löllingite (FeAs2; Roberto zone);
- Quartz, diopside, schorl, arsenopyrite veins (East Roberto zone);
- Atypical mineralized zones in quartz–feldspathic veinlets, high-grade quartz veins, high-grade paragneiss (North Zone and Hanging Wall Zone).

Mineralization shows variable proportions of disseminated arsenopyrite, löllingite, and pyrrhotite. Traces of pyrite, sphalerite, bornite, and chalcopyrite are also locally present.

The sulphide concentration within the mineralized zones varies between 1% and 5%, and primarily consists of arsenopyrite, löllingite, pyrrhotite and pyrite. The “waste” rock may contain sulphides, usually pyrrhotite, but this is in lesser amounts, from trace to 2%, and occurs mostly in the structural hanging wall.

The mineralized zones are generally 5 m to 6 m in true thickness, varying between 2 m and more than 20 m locally. Mineralization is considered to pre-date the final deformation phase (Ravenelle et al, 2010).

The mineralized zones are folded with increased thicknesses in the hinge of the folds while limbs are fairly straight and continuous. Transposition of the sedimentary beds post-mineralization may also explain some of the thickening of the mineralized zones.

The Roberto gold zones dip steeply to the east and rake (plunge) steeply to the northeast. All zones remain open at depth and along strike.

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

Éléonore produced 246,000 ounces of gold in 2019 since the completion of the acquisition of the mine site as part of the Newmont Goldcorp transaction on April 18, 2019.
CommodityUnits2024202320222021202020192018201720162015
Gold koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe246342305274268
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.

Operational metrics

Metrics202320222021202020192018201720162015
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1,647 k tons1,688 kt1,381 kt
Waste  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Tonnes milled  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1,654 k tons1,875 kt1,812 kt1,688 kt1,706,700 t
Daily mining capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe8,500 t
Daily milling capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe7,000 t7,000 t7,000 t
Annual milling capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2.55 Mt2.55 Mt
Daily ore mining rate  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe4,650 t

Production Costs

CommodityUnits20242023202220212020201920182017
Credits (by-product) Gold USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Cash costs (sold) Gold USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Total cash costs (sold) Gold USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 809 / oz **  
Total cash costs Gold USD 797 / oz **   841 / oz **  
All-in sustaining costs (sold) Gold USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 1,013 / oz **  
All-in sustaining costs (AISC) Gold USD 941 / oz **   1,095 / oz **  
^ Guidance / Forecast.
** Net of By-Product.

Operating Costs

Currency2016
UG mining costs ($/t mined) USD 65.2  
Processing costs ($/t milled) USD  ....  Subscribe

Financials

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ....  Subscribe
Capital expenditures M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 55   72   110  
Sustaining costs M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 71  
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 378   429   377  
Operating Income M USD 65   -12   -11  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe

Heavy Mobile Equipment

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AV - Autonomous

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 23, 2024
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....................... Subscription required ....................... Subscription required Subscription required Apr 23, 2024
....................... Subscription required ....................... Subscription required Subscription required Apr 23, 2024
....................... Subscription required ....................... Subscription required Subscription required Apr 23, 2024
....................... Subscription required ....................... Subscription required Subscription required Apr 23, 2024
....................... Subscription required ....................... Subscription required Subscription required Apr 23, 2024

EmployeesContractorsTotal WorkforceYear
...... Subscription required 2018
...... Subscription required 2017
...... Subscription required ...... Subscription required 2015

Aerial view:

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