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Burkina Faso
Youga Operation (Balogo Mine, Youga Mine)

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 Location:
180 km SE from Ougadougou, Burkina Faso

  Regional Office:
S08 BP 11197, Ouagadougoy 08
Burkina Faso
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life2025
Avesoro Holdings Ltd., a private equity firm, acquired Youga and Balogo mines in December 2018. Mine operations data has not been publicly available since then.


Owners

Source: p. 4
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
Avesoro Holdings Ltd 90 % Indirect
Youga was acquired by the Avesoro Resources Inc. on 18 December 2017.

Avesoro Resources was delisted at TSX in January 2020.

Contractors

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Deposit Type

  • Breccia pipe / Stockwork
  • Mesothermal
  • Vein / narrow vein


Summary:

The gold deposits within the Youga, Ouaré and Balogo properties can be described as epigenetic, mesothermal (“lode”) gold deposits, demonstrating a strong structural control and relationship to regional scale shear zones. Similar deposits can be found in other areas of the late Proterozoic Birimian terranes of West Africa.

At Youga and Ouaré, gold mineralisation is intimately associated with pervasive silicification, quartz veining and sulphidation (predominantly pyrite), although sulphide content is extremely low (generally <1%).

The majority of the Youga gold deposits are hosted within the Tarkwaian sandstones, while Ouaré is hosted along the sheared contact between mafic volcanics to the north and quartz-feldspar porphyritic rocks to the south.

At Balogo, gold mineralisation is typically associated with networks of quartz mineralisation or associated with disseminated sulphides within strongly deformed alteration zones.

Within the Youga deposit, there are two distinct styles of mineralisation:
• Moderately to weakly silicified arkose with quartz stockwork veining and pyrite is the predominant sulphide which generally grades between 0.5 g/t and 2 g/t
• Intensely silicified arkose with abundant quartz veins and more diverse sulphides which generally grades >3 g/t.

The Ouaré mineralisation is on the Bitou 2 Exploration Permit and has been delineated in three zones, along a strike length of 2 km.

At t ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The proposed method of mining for the deposits at Youga, Ouaré and Balogo (Netiana) is a conventional open pit method using drilling and blasting, loading with hydraulic excavators, and hauling with articulated dump trucks. Consideration of underground mining has not been necessary at this stage of the Project.

Mining rates vary over the life of the mine, depending on the stripping ratio for the individual deposits or pits. The cut-off grade applied to each pit depends mainly on the location and ore transport cost. Other costs (Processing, General and Administration (G&A) etc.) were constant across all deposits.

At Youga and Ouaré there is limited opportunity to create pushbacks or stages within a final pit limit and it has generally only been possible to divide the individual deposits into sub-pits that may or may not be contiguous.

The Netiana pit was subdivided into two stages with a smaller starter pit to allow the mining sequence to target high grade with a low strip ratio in the first year of production. The starter pit has now been largely mined out and the remaining reserves will be mined out by Q4 2023.

To transport ore from Ouaré to Youga up to 30 Volvo trucks (40-t capacity) on two shifts per day, with each truck completing two trips per shift, or four trips per day, have been assumed. With an 80% availability, this translates into a capacity of 120,000 t/month.

The support equipment consists of drills, doze ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits20182017
Gold oz 110,751115,894
All production numbers are expressed as metal in doré.
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Operational Metrics:

Metrics20182017
Total tonnes mined 15,441 kt9,515 kt
Ore tonnes mined 969 kt870 kt
Waste 14,472 kt8,645 kt
Tonnes processed 1,237 kt1,200 kt
Stripping / waste ratio 9.9

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 0.08 Mt Gold 5.66 g/t 14 koz
Probable 14.67 Mt Gold 1.7 g/t 800.8 koz
Proven & Probable 14.74 Mt Gold 1.72 g/t 814.9 koz
Measured 0.05 Mt Gold 7.17 g/t 11.3 koz
Indicated 22.11 Mt Gold 1.66 g/t 1,178 koz
Measured & Indicated 22.16 Mt Gold 1.67 g/t 1,189 koz
Inferred 7.6 Mt Gold 1.5 g/t 377 koz

Commodity Production Costs:

CommodityUnits2017
Cash costs (sold) Gold USD 512 / oz  
All-in sustaining costs (sold) Gold USD 760 / oz  

Financials:

Units2017
After-tax Income M USD 1.3  



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 19, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 19, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
Technical Report 2018
Corporate Presentation 2017
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