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Cote d'Ivoire
Yaoure Mine

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 Location:
35 km NW from Yamoussoukro, Cote d'Ivoire

  Regional Office:
II Plateaux – Vallons Rue J75/J44 Lot 1438 ilot 145 06 BP 1958
Abidjan
Cote d'Ivoire
06
Phone  ...  Subscription required
Fax+225-22-41-91-25
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life8 years (as of Jan 1, 2022)
First gold was poured at Yaouré in December 2020, and Commercial Production was declared on 31 March 2021.
Latest NewsPerseus’s Drilling Demonstrates Potential for Additional Gold Resources at Yaouré Gold Mine     January 18, 2023


Owners

Source: p. 13
CompanyInterestOwnership
Government of Côte d’Ivoire 10 % Indirect
Perseus Mining Ltd. 90 % Indirect
The Company holds 90% of Yaouré Gold Mine after allowing for Government equity.

Contractors

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Deposit Type

  • Intrusion related
  • Mesothermal
  • Orogenic


Summary:

The Yaouré Deposit is a structurally controlled, greenstone hosted gold deposit similar in nature to many exploited elsewhere in the Birimian terranes of West Africa.

Gold mineralisation is accompanied by traces of molybdenum, tungsten, antimony, bismuth and tellurium indicating that the mineralisation may have affinities with the reduced intrusion-related gold systems (IRGS). The predominance of structural controls and association with carbonatisation, sericitisation and silicification, however, are characteristics that more clearly point to its classification as an orogenic, mesothermal gold deposit.

Govisou and Angovia 2 deposits are hosted by Palaeoproterozoic Birimian Supergroup rocks of the Bouaflé Greenstone Belt.

Govisou gold deposit is hosted by a diorite intrusion surrounded by metabasalts. Mineralisation is thought to be associated with both NE and NW striking, subvertical structures but forms a diffuse volume that is almost circular in plan view, about 90m in diameter and plunging at about 60 degrees toward the NNW. Gold is associated with low concentrations of finegrained disseminated pyrite and phengite alteration. Quartz veining is rare.

Angovia 2 deposit comprises gold mineralisation associated with pyrite disseminations and veinlets hosted in chloritecarbonate-silica altered metabasalts. The deposit strikes E-W in an anastomosing shear zone and extends over about 550m strike, with mineralisation controlled by brit ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Ore and waste will be mined from the CMA pit, Yaouré pit, Govisou pit, Angovia 2 pit and the small Y-pits, complimented with the remaining stocks of previously heap leach ore stacked as part of previous decommissioned mining operations. The CMA and Yaouré pits currently provide the bulk of the ore feed sources throughout the life of mine, as currently envisaged.

The chosen method of mining is conventional open pit mining utilising hydraulic excavators and trucks, mining bench heights of 5 m with 2.5m flitches to minimise ore loss and waste rock dilution.

Inter-ramp pit slopes are 40 to 60 degrees varied by material weathering level and wall sector. Inter ramp slopes are excluding ramp but including berms spaced at between 10 and 20 metres vertically and berm widths of 5 to 7 metres.

Pit ramps have been designed for a 100-tonne payload truck fleet and are set at 24 metres (dual lane) to 16 metres (single lane).

Minimum mining width of 40 m was generally applied to the pit designs.

Perseus is currently mining the CMA orebody at the Yaouré Gold Mine in Côte d’Ivoire using conventional open pit mining methods. The CMA is a tabular zone of mineralisation 2-20 metres thick which generally grades at 3-7g/t gold and generally dips to the east at 20-35 degrees but can be shallower or steeper locally.

In FY2022, the main ore source will continue to be stages 1 and 2 of the CMA pit with additional ore being sourced fr ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits20222021LOM (Projected)
Gold oz  ......  Subscription required  ......  Subscription required1,367,000
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics20222021
Total tonnes mined  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required
Tonnes milled  ......  Subscription required  ......  Subscription required
Stripping / waste ratio  ......  Subscription required  ......  Subscription required
Plant annual capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2022:
0.4g/t gold cut-off applied to in situ open pit material Mineral Resource.

Variable gold grade cut-offs for each Ore Reserves material type, ranging from 0.40 g/t to 0.70 g/t.

CategoryTonnage CommodityGradeContained Metal
Proven 2.7 Mt Gold 0.97 g/t 83 koz
Probable 27.4 Mt Gold 1.77 g/t 1,559 koz
Proven & Probable 30 Mt Gold 1.7 g/t 1,642 koz
Measured 2.7 Mt Gold 0.97 g/t 83 koz
Indicated 53.2 Mt Gold 1.36 g/t 2,335 koz
Measured & Indicated 55.9 Mt Gold 1.35 g/t 2,418 koz
Inferred 42 Mt Gold 1.2 g/t 1,580 koz

Commodity Production Costs:

CommodityUnits20222021
Cash costs Gold USD  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operating Costs:

Units20222021
OP mining costs ($/t mined) USD 2.72.71
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required
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Financials:

Units20222021
Revenue M AUD  ......  Subscription required  ......  Subscription required
Pre-tax Income M AUD  ......  Subscription required  ......  Subscription required
After-tax Income M AUD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Proposed Heavy Mobile Equipment as of November 3, 2017:
HME TypeSizeQuantityLeased or
Contractor
Dozer 384 kW ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Financial Review 2022
Quarterly Report 2022
Sustainability Report 2022
Year-end Mineral Reserves 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Corporate Presentation 2018
Feasibility Study Report 2017
Subscription required - Subscription is required.

News:

NewsDate
Perseus’s Drilling Demonstrates Potential for Additional Gold Resources at Yaouré Gold Mine January 18, 2023

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