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Mali
Yatela Mine

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 Location:
51 km SW from Kayes, Mali

  Regional Office:
BP E 1194, Rue 376, Niarela
Bamako
Mali
Phone  ...  Subscription required
Fax+223 5407222
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StatusClosing / Closed
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Heap leach
  • Carbon in solution (CIS)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
The processing of tailings continued in 2017 as part of closure activities, including rinsing and rehabilitation of the heap leach pads and will continue until the end of 2021, with the completion of mine closure expected at the end of 2022.


Owners

Source:
CompanyInterestOwnership
IAMGOLD Corp. 40 % Indirect
AngloGold Ashanti Ltd. 40 % Indirect
Yatela is 80% owned by the Sadiola Exploration Company Limited, a joint venture between AngloGold Ashanti and IAMGOLD, giving each a 40% stake. The balance of 20% is owned by the Government of Mali.

Deposit Type

  • Sedimentary


Summary:

The Yatela mine comprises the Yatela and Alamoutala deposits located in northwest Mali within the Keniéba-Kedougou Inlier, a major Paleoproterozoic- Birimian inlier along the northeast margin of the Kenema-Man shield. The Yatela deposit is located in the north of the inlier and is hosted in sedimentary rocks of the Kofi Formation, which have been intruded by numerous felsic to intermediate intrusives. The sedimentary rocks consist of fine-grained greywackes, pelites and impure limestones with minor tuffs and acid volcanics. The primary gold mineralisation is hosted along a sheared contact between predominantly dolomitic carbonate rocks of the Kofi Formation to the west and a dioritic intrusion to the east. The secondary mineralisation was concentrated to economic grades through dissolution of the carbonate and subsequent concentration of the gold by eluvial processes and supergene enrichment.

Karst development at Yatela has formed deep pot holes, collectively named the Yatela Basin, which were gradually filled by sandstones and conglomerates during peneplanation of the Proterozoic rocks. Chaotic collapse during karstification, coupled with the infill sediments resulted in the deposit being hosted in a melange-type of rocks made up of sedimentary rocks and dissolution residues. Gold is disseminated in the unconsolidated ferruginous, clastic layer with sandy-clayey matrix that lines the bottom and walls of a deep trough with steep margins. The karst margin dips steeply on the west wall and more gently to the west on the east wall, following a keel-like geometry with tight closure on the folded diorite towards the south. The supergene enrichment of low-grade primary gold mineralisation associated with the karstification is the most important geological feature to the economics of the Yatela deposit.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Yatela is a mature open pit operation which has been operated by AngloGold Ashanti since 2000 and is now operating in closure mode with mining activities from the pits completed in September 2013.


Crushing and Grinding


Processing

  • Heap leach
  • Carbon in solution (CIS)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Source: Subscription required

Summary:

Ore is processed through a three million tonnes per annum heap leach plant that was commissioned in 2000. The pregnant liquor pond for gold recovery uses the carbon-in-solution (CIS) process, with loaded carbon being sent to Sadiola for elution, regeneration, electro-winning and smelting.

Recoveries & Grades:

CommodityParameter20142013
Gold Head Grade, g/t 0.590.93

Production:

CommodityUnits201820172016201520142013
Gold koz  ......  Subscription required7.512182567
All production numbers are expressed as payable metal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20142013
Tonnes processed 2.3 Mt2.5 Mt

Reserves at December 31, 2013:

CategoryTonnage CommodityGradeContained Metal
Total Resource 0.35 Mt Gold 0.54 g/t 0.01 M oz

Commodity Production Costs:

CommodityUnits201520142013
Total cash costs Gold USD 974 / oz 1,438 / oz 1,530 / oz
All-in sustaining costs (sold) Gold USD 1,590 / oz 1,795 / oz 1,653 / oz

Financials:

Units2013
Capital expenditures M USD 7  


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 23, 2019
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2014
Subscription required Subscription required Subscription required 2013

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Annual Report 2017
Management Discussion & Analysis 2017
Management Discussion & Analysis 2016
Annual Report 2014
Year-end Mineral Reserves 2013
Subscription required - Subscription is required.

Aerial view:

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