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Burkina Faso
Essakane (CIL, HL) Project (Essakane)

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 Location:
33 km E from Gorom-Gorom, Burkina Faso

  Project Contacts:
Secteur 13, rue 13.16, porte 72 09 BP 11
Ouagadougou
Burkina Faso
09
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageConstruction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life2031


Owners

Source: p. 10,103
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
IAMGOLD Corp. 90 % Indirect
IamGold owns 90% of the outstanding shares of IMG Essakane, while the Government of Burkina Faso has a 10% free-carried interest in the outstanding shares of IMG Essakane. IMG Essakane means IamGold Essakane S.A., the Company’s 90% subsidiary, established under the laws of Burkina Faso.

Contractors

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Deposit Type

  • Orogenic
  • Vein / narrow vein


Summary:

The Essakane Gold Mine occurs in the Paleoproterozoic Oudalan Gorouol greenstone belt in northeast Burkina Faso. The stratigraphy can be subdivided into a succession of lowergreenschist facies meta sediments (argillites, arenites, and volcaniclastics), conglomerate, and subordinate felsic volcanics, and an overlying Tarkwaian-like succession comprising siliciclastic meta-sediments and conglomerate. Each succession contains intercalated mafic intrusive units that collectively comprise up to 40% of the total stratigraphic section.

Gold prospects on the permits occur exclusively in Birimian rocks and are generally associated with quartz veining on the margins of mafic and intermediate sills. Exceptions are the Essakane main zone (EMZ) deposit and the Sokadie prospects (the latter on the Alkoma 2 permit). The EMZ deposit is characterized by quartz veining in a folded turbidite succession of arenite and argillite. At the Sokadie prospect, the veins occur in a sheared volcaniclastic unit between undeformed andesite and metasediments. Gold has generally been found to occur with quartz veining on the contacts of rock units with contrasted competency and as filling of brittle fractures in folded sediments.

The EMZ deposit is a greenstone hosted orogenic gold deposit. Specifically, it is a quartzcarbonate stockwork vein deposit hosted by a folded turbidite succession of arenite and argillite. The laminated sedimentary units are part of turbidite sequences. The reg ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining is carried out using a conventional drill, blast, load, and haul surface mining method with an owner fleet.

Essakane consists of several operating sites. The EMZ main pit is mined in several mining phases and accounts for the majority of the production. The Falagountou, EMZ North, and South (Lao) satellite pits provide additional ore and operational flexibility.

Grade control is accomplished by RC drilling and sampling of the mineralized zone on a 10 m x 10 m pattern, or tighter, as required. For sterile sections of the pit, the grid may be widened out based on the nature of the contacts and/or other geological occurrences.

A fleet of four drill rigs are used for the 229 mm (9.0 inch) production blast holes. All blasting activities on site are executed by an explosives supplier. Holes are loaded with bulk explosive matrix and initiated with electronic detonators.

Grade movement during blasting is a critical issue at Essakane. For this reason, blast movement monitors (BMMs) are systematically used when blasting mineralized areas in order to measure vertical and horizontal displacement which allows for the adjustment of the post blast ore packets.

Waste material is being dumped in the WRDs located east of the main pit.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityUnitsLOM
Gold koz 3,401
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Annual mining capacity 55 Mt *
Waste tonnes, LOM 244.94 Mt *
Ore tonnes mined, LOM 100.26 Mt *
Total tonnes mined, LOM 345.2 Mt *
Tonnes processed, LOM 126.49 Mt *
* According to 2019 study.

Reserves at December 31, 2020:

CategoryTonnage CommodityGradeContained Metal
Proven 30,083 kt Gold 0.5 g/t 473 koz
Probable 83,071 kt Gold 1.1 g/t 2,876 koz
Proven & Probable 113,153 kt Gold 0.9 g/t 3,349 koz
Measured 30,023 kt Gold 0.5 g/t 473 koz
Indicated 110,433 kt Gold 1.1 g/t 3,781 koz
Measured & Indicated 140,456 kt Gold 0.94 g/t 4,254 koz
Inferred 10,262 kt Gold 1.1 g/t 352 koz

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs (sold) Gold USD  ......  Subscription required&nbs
All-in sustaining costs (sold) Gold USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2019 study / presentation.

Operating Costs:

Units2019
OP mining costs ($/t mined) USD 3.02 *
G&A ($/t milled) USD  ......  Subscription required
* According to 2019 study.
Subscription required - Subscription is required.

2019 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Expansion CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax NPV @ 6% $M USD  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Jan 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Jan 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 27, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
Pre-Feasibility Study Report 2018
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Subscription required - Subscription is required.

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