Cote d'Ivoire

Doropo Project

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Overview

Mine TypeOpen Pit
StagePermitting
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life... Lock
SnapshotThe Doropo Gold Project is a multi-pit project that consists of seven deposits.

The project is being progressed through to the Definitive feasibility study stage which is scheduled for completion in mid-2024.

Owners

SourceSource
CompanyInterestOwnership
Centamin plc 100 % Indirect
The Project is contained within seven current exploration permits that were granted to Ampella Mining Côte d’Ivoire and Ampella Mining Exploration Côte d’Ivoire, which are both 100% owned Ivoirian subsidiaries of Centamin.

Contractors

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Deposit type

  • Vein / narrow vein
  • Orogenic

Summary:

Deposit Type The Doropo Project currently includes thirteen distinct mineralised bodies that host the actual resource plus numerous prospects and geochemical surface anomalies yet to be tested, fitting an area of about 170 km2 , or within a circular area of 28 km radius. The mineral occurrences tested to date include two model types, a ‘classic’ orogenic shear-hosted gold deposit model and a quartz vein hosted gold deposit model. Both these models are coherent in nature with the majority of the other West African deposits, except on the issue of the host lithology (the granitic domain). The granitic complex displays lozenge-shaped arrays of anastomosing shear zones. The shears have a broad south-southwest to north-northeast orientation, dipping shallowly towards the northwest. The quartz veins mainly occur along the NW-SE orientation, and are sub-vertical or steeply dipping towards the SW. These veins show significant gold grades and often visible gold but have a limited width. Structure and Mineralisation The granites are intruded by an abundant series of pegmatitic veins and quartz veins, ranging from the decimetre scale to several hundreds of metres scale. Some of this veining hosts gold mineralisation, often as primary native gold, across the entire area. This generates regular dispersed gold anomalism in the surface geochemistry; it is also the main source of the gold extracted by the artisanal miners but is mostly uneconomic at the industrial scale. Economically interesting mineralisation is associated with discrete structures of intense silica-sericite alteration, focused within and along the margins of narrow (5 - 10 m wide to locally 20 - 25 m wide) dextral shear zones. Outside of the mineralised zones, the granodiorite is fairly undeformed. The planar zones of mineralisation define a great circle on the stereonet with a plunge of 30->295 (excluding Kilosegui). This direction appears to be coincident with the linear shoot directions within the planar zones of mineralisation and can be used to further explore the deposits (e.g. Nokpa). Even though Kilosegui appears to be in a completely different strike orientation to the planar zones of gold mineralisation at Doropo, the trend could well be related and may have been formed under the same stress conditions. If Kilosegui is completely unrelated to Doropo, the poles of the planar grade continuity would not lie close to the great circle defined by the poles of the Doropo zones. With the inclusion of Kilosegui, the average pole to the great circle that fits through the local planar orientations is 25->266. Further drilling will support or negate this hypothesis. Alteration and Mineralisation Mineral assemblages distal to the mineralised zones include epidote-chlorite and haematite. Haematite alteration is then pervasive at weak to medium intensity. This haematite alteration can be very strong in the vicinity of the doleritic dykes, making the vectoring towards mineralisation difficult in such areas; this is particularly demonstrative at the Nokpa deposit. Proximal mineral assemblages, include strong silica-sericite alteration that often overprints earlier haematite and silica alteration. The sulphides, mostly pyrite, are abundant throughout the core of the shear zone; they host part of the gold mineralisation. The other portion of the gold mineralisation occurs as native gold in the quartz veins and selvages.

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
Gold koz 1731,729
All production numbers are expressed as metal in doré.

Operational metrics

Metrics
Annual mining capacity  ....  Subscribe
Annual processing capacity  ....  Subscribe
Stripping / waste ratio  ....  Subscribe
Waste tonnes, LOM  ....  Subscribe
Ore tonnes mined, LOM  ....  Subscribe
Total tonnes mined, LOM  ....  Subscribe
Tonnes processed, LOM  ....  Subscribe
* According to 2023 study.

Production Costs

CommodityUnitsAverage
Cash costs Gold USD  ....  Subscribe
All-in sustaining costs (sold) Gold USD  ....  Subscribe
Assumed price Gold USD  ....  Subscribe
* According to 2023 study / presentation.

Operating Costs

Currency2023
OP mining costs ($/t mined) USD 4.05 *  
OP mining costs ($/t milled) USD  ....  Subscribe
Processing costs ($/t milled) USD  ....  Subscribe
G&A ($/t milled) USD  ....  Subscribe
* According to 2023 study.

Project Costs

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscribe
Sustaining CapEx $M USD  ......  Subscribe
Closure costs $M USD  ......  Subscribe
OP OpEx $M USD  ......  Subscribe
Processing OpEx $M USD 523
Refining and transportation $M USD  ......  Subscribe
G&A costs $M USD 143
Total OpEx $M USD  ......  Subscribe
Income Taxes $M USD  ......  Subscribe
Royalty payments $M USD  ......  Subscribe
Gross revenue (LOM) $M USD  ......  Subscribe
Net revenue (LOM) $M USD  ......  Subscribe
Operating margin (LOM) $M USD  ......  Subscribe
Pre-tax Cash Flow (LOM) $M USD  ......  Subscribe
After-tax Cash Flow (LOM) $M USD  ......  Subscribe
Pre-tax NPV @ 5% $M USD  ......  Subscribe
After-tax NPV @ 5% $M USD  ......  Subscribe
Pre-tax IRR, %  ......  Subscribe
After-tax IRR, %  ......  Subscribe
After-tax payback period, years  ......  Subscribe

Heavy Mobile Equipment

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Personnel

Mine Management

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EmployeesYear
...... Subscription required 2023

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