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Cote d'Ivoire
Abujar Mine

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 Location:
30 km W from Daloa, Cote d'Ivoire

  Address:
Unit 7, 162 Colin Street
West Perth
Western Australia, Australia
6005
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Fax+61-8-6316-1428
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life11 years (as of Jan 1, 2021)
Latest NewsTietto commences wet commissioning at Abujar – first gold pour within 10 days     January 3, 2023


Owners

Source: p. 7
CompanyInterestOwnership
Government of Côte d’Ivoire 10 % Indirect
Tietto Minerals Ltd. 88 % Indirect
Tietto (TIE) has an 88% interest in the Abujar Gold Project with its local partners having a two percent interest. The Government of Côte d’Ivoire is entitled to a free-carried 10% interest in the Project on commencement of mining.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Mesothermal


Summary:

The Abujar Deposit is located within a NNE-SSW orientated body of granitoid migmatite and is hosted within in an interpreted regional shear structure. This is then enclosed within two mica granite bodies of similar interpreted orientation which are regionally referred to as granodiorites. The lithologies of Proterozoic age which are present inside the Project include:
- Migmatitic granitoids (Eburnean) associated with syntectonic granites; they can belong to either the metamorphic or the magmatic domain depending on the intensity of melting. They occur in the central portion of the property;
- Metamorphosed rhyolite (Eburnean) of pyroclastic origin. They occur as relics within two mica granites and consist mainly of quartz phenocrysts inside glass. They are found as light coloured banks showing mainly muscovite corresponding most probably to pyroclastic rhyolitic flows;

Schists are divided into two groups:
- Argillic schist: are always weathered with mottled texture and crosscut by quartz veins; and
- Two-mica (+ staurolite and andalusite) schist: - consist of biotite and muscovite with minor andalusite, which is a common mineral of contact metamorphism. This rock occurs at the contact with two-mica granite bodies in the central area of the property.

Two styles of deformation are interpreted to be present within the drill cores at Abujar; these include both ductile deformation and brittle deformation. The gold mineralisation is interp ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Project involves the development of a truck-and-shovel, open-pit mine using conventional metalliferous mining techniques. The key aspects of the site layout for the AG deposit and main complex, include the north pit, the larger main pit, and a number of smaller south pits as well as the four waste dumps – one adjacent to the north pit, two adjacent to the main pit, and one adjacent to the south pit, a ROM pad and low-grade stockpile. Additionally the APG satellite deposit is located 9 km to the south along strike and consists of a cluster of satellite pits, and three small waste dumps.

A production rate study was completed as part of the initial project definition phase. Within Geovia Whittle 4X software, RPM examined production rate options ranging from 2 Mtpa to 4 Mtpa, in 0.5 Mtpa increments. In conjunction with Tietto, the 4.0 Mtpa ore production rate was selected as it best met corporate objectives for cash flow and mining life. The SMU was selected on the basis of an ore loss and dilution study. The Resource model was converted to a mining model by regularising the blocks to a smallest mining unit (SMU) of 2.5 (X), 6.25 (Y), 2.5 (Z) to account for loss and dilution. The SMU size was selected based on the structure of the mineralisation, proposed mining method and grade control practises, excavator size and proposed mining bench and flitch height.

The SMU size selected assumes mining two 2.5 m flitches, with a 5 m bench height for blasts contain ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnitsAvg. Annual (Projected)LOM (Projected)
Gold koz 1551,689
All production numbers are expressed as metal in doré.


Reserves at September 30, 2021:
Resources: Reported at 0.25 g/t Au cut off within pit shells; and 1.0 g/t Au cut off below the pit shells for AG, and reported at 0.3 g/t Au cut off within pit shells; and 1.0 g/t Au cut off below the pit shells for APG, and 0.3 g/t Au to a depth of 120m for SG.
Reserves: Marginal cut-off grades for AG: Oxide 0.29 g/t Au, Transition 0.29 g/t Au and Fresh 0.30 g/t Au. Marginal cut- off grades for APG: Oxide 0.32 g/t Au, Transition 0.32 g/t Au and Fresh 0.33 g/t Au.

CategoryTonnage CommodityGradeContained Metal
Probable 34.4 Mt Gold 1.3 g/t 1.45 M oz
Indicated 43.4 Mt Gold 1.3 g/t 1.85 M oz
Inferred 44.2 Mt Gold 1.05 g/t 1.49 M oz
Total Resource 87.5 Mt Gold 1.2 g/t 3.35 M oz



Proposed Heavy Mobile Equipment as of October 5, 2021:
HME TypeModelSizeQuantityLeased or
Contractor
Backhoe 110 t ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Oct 5, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 8, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
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News:

NewsDate
Tietto commences wet commissioning at Abujar – first gold pour within 10 days January 3, 2023
Tietto Processes First Ore in Abujar SAG Mill in Côte d’Ivoire December 16, 2022
Tietto Hits 184.55 g/t Gold at South Gamina at Abujar December 7, 2022

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