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Namibia
Otjikoto Mine

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 Location:
48 km SW from Otavi, Namibia

  Regional Office:
20 Nachtigal Street Ausspannplatz,
P.O Box 80363
Windhoek
Namibia
9000
Phone  ...  Subscription required
Fax+264-61-295-8799
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 & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Transverse open stoping
  • Cemented backfill
  • Paste backfill
Production Start...
Mine Life2031
The Otjikoto is comprised of Otjikoto and Wolfshag open pits and Wolfshag underground mines.

Development of the Wolfshag underground mine commenced in late 2020, and ore production commenced in the second half of 2022.

Open pit mining operations at the Otjikoto Mine are scheduled to ramp down in 2024 and conclude in 2025, while processing operations will continue until economically viable stockpiles are exhausted in approximately 2031. Underground operations are currently projected to continue until 2026 with potential to extend underground operations if the ongoing underground exploration program is successful in identifying more underground mineral deposits.


Owners

Source: p. 18
CompanyInterestOwnership
EVI Mining (Proprietary) Ltd. 10 % Indirect
B2Gold Corp. 90 % Indirect
B2Gold Namibia (Pty) Ltd. (operator) 100 % Direct
B2Gold Namibia is a joint operation between a Canadian company, B2Gold, that holds 90% shares, and local mining company, EVI Mining, with 10% shares.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Orogenic


Summary:

The Otjikoto deposit is located within the Damara Mobile Belt, within the northern portion of the northeasterly-striking “Intracratonic Branch” of the belt and is an example of an orogenic-style gold deposit. The Otjikoto area is predominantly underlain by lithologies belonging to the Neoproterozoic Swakop Group. The Okonguarri Formation hosts the gold mineralization and is overlain and underlain by glacial diamictite horizons of the Ghaub and Chuos Formations, respectively. The Okonguarri Formation consists primarily of thick units of dark grey carbonaceous marble, biotite-schist, graphitic schist, and calc- silicate horizons. The schist units are derived from semi-pelitic, pelitic, marl and psammitic units in a turbiditic sedimentary package. The rocks in the Otjikoto area have experienced at least three phases of moderate to tight folding and some thrust faulting. They have also been affected by extensive metasomatism, followed by prograde regional metamorphism that has reached upper greenschist to lower amphibolite facies. Mineralization in the main Otjikoto deposit is hosted by a north–northeast striking sheeted sulphide (+ magnetite)– quartz + carbonate vein system that has a strike length of about 2.6 km and extends at depth to at least 475 m below surface. The gold occurs in a series of thin (commonly <10 cm) sheeted veins in the Upper and Middle Okonguarri Formation. The veins and associated mineralization form a series of en-echelon zones oriented at approximately ........


Mining Methods

  • Truck & Shovel / Loader
  • Transverse open stoping
  • Cemented backfill
  • Paste backfill


Summary:

The Otjikoto Mine is currently an owner-operated conventional open pit operation. Development of the Wolfshag underground mine commenced in late 2020, and ore production commenced in the second half of 2022. Mining is based on a phased approach with stockpiling to bring HG material forward and provide operational flexibility.

Open pit Mineral Reserves will be mined from the Otjikoto pit for two years, including 2023. The current underground mine plan projects that Mineral Reserves will be mined from the Wolfshag deposit for approximately four years starting in late 2022. Mill production is scheduled for a total of four years, including 2023. Development is based on the Otjikoto deposit being mined in four or five phases and underground mining at the Wolfshag deposit. The ultimate pit will be 2.8–3.0 km in length and will have separate pit bottoms for the Otjikoto and Wolfshag deposits. Our mine life estimate is based on current Mineral Reserves, with the addition of non-Reserve mining from a planned fifth phase of the Otjikoto pit if supported by mining costs and gold prices at the time. This fifth phase contains approximately 90,000 ounces of Indicated Mineral Resources that have not been converted to Mineral Reserves, which would be mined and processed at the end of the two-year mine life. Mineral Resources in LG stockpiles may be processed at the end of mine life, or when higher-grade tonnage is not available, depending on current costs and gold prices. Mineral ........


Crushing and Grinding
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Processing

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Summary:

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^ Guidance / Forecast.

Production:

CommodityUnits2023202220212020201920182017
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required167,346191,534
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
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Operational Metrics:

Metrics202320222021202020192018
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required3,505,569 t3,415,475 t3,445,932 t
Annual milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required3.1 Mt
^ Guidance / Forecast.
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Reserves at December 31, 2022:
Mineral Reserves to be mined using open pit methods or in stockpiles are reported above a cut-off grade of 0.45 g/t Au.
Mineral Reserves to be mined using underground methods are reported above a cut-off grade of 2.68 g/t Au.

Mineral Resources that are amenable to open pit mining are reported at a cut-off grade of 0.28 g/t Au.
Mineral Resources that are amenable to underground mining are reported at cut-off grades of 1.5, 2.25 or 3.25 g/t Au and a minimum thickness of 1.5 m.

CategoryTonnage CommodityGradeContained Metal
Probable 7,930 kt Gold 1.9 g/t 480 koz
Indicated 43,540 kt Gold 0.86 g/t 1,200 koz
Inferred 3,290 kt Gold 2.99 g/t 320 koz

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 502 / oz†   468 / oz†  
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 559 / oz†  
Total cash costs Gold USD 553 / oz†   512 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 724 / oz†  
All-in sustaining costs (AISC) Gold USD 719 / oz†   715 / oz†  
^ Guidance / Forecast.
† Net of By-Product.
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Operating Costs:

Units20162015
OP mining costs ($/t mined) USD 1.54  
OP mining costs ($/t milled) USD  ......  Subscription required
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
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Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 50.8   41.2  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 213.1   235.9  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 6.4   46.9  
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Water Supply
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Heavy Mobile Equipment:
HME TypeModelQuantityLeased or
Contractor
Ref. Date
Dozer (crawler) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Dozer (crawler) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Dozer (crawler) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Dozer (rubber tire) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Drill (blasthole) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Drill (blasthole) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Drill (long hole) ....................... Subscription required ....................... Subscription required Leased Apr 11, 2022
Excavator ....................... Subscription required ....................... Subscription required Dec 31, 2018
Excavator ....................... Subscription required ....................... Subscription required Dec 31, 2018
Excavator ....................... Subscription required ....................... Subscription required Dec 31, 2018
Grader ....................... Subscription required ....................... Subscription required Dec 31, 2018
Grader ....................... Subscription required ....................... Subscription required Dec 31, 2018
Jumbo ....................... Subscription required ....................... Subscription required Leased Apr 11, 2022
Jumbo ....................... Subscription required ....................... Subscription required Leased Apr 11, 2022
Loader ....................... Subscription required ....................... Subscription required Leased Apr 11, 2022
Loader ....................... Subscription required ....................... Subscription required Dec 31, 2018
Loader ....................... Subscription required ....................... Subscription required Dec 31, 2018
Shovel ....................... Subscription required ....................... Subscription required Dec 31, 2018
Truck (haul) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Truck (haul) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Truck (service) ....................... Subscription required Dec 31, 2018
Truck (underground) ....................... Subscription required ....................... Subscription required Leased Apr 11, 2022
Truck (water) ....................... Subscription required ....................... Subscription required Dec 31, 2018
Truck (water) ....................... Subscription required ....................... Subscription required Dec 31, 2018
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 15, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 15, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 15, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 15, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 15, 2023
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Staff:

EmployeesYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Press Release 2023
Quarterly Report 2023
Annual Information Form 2022
Financial Review 2022
Management Discussion & Analysis 2022
Other 2022
Sustainability Report 2022
................................... Subscription required 2021
................................... 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 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Management Discussion & Analysis 2018
Press Release 2018
Technical Report 2018
Annual Information Form 2017
Financial Review 2017
Management Discussion & Analysis 2017
Press Release 2017
Annual Information Form 2016
Management Discussion & Analysis 2016
Annual Information Form 2015
Management Discussion & Analysis 2015
Feasibility Study Report 2013
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