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Tanzania
Geita Mine

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 Location:
0 km from Geita, Tanzania

  Address:
P.O. Box 532
Geita
Tanzania
Phone  ...  Subscription required
Fax+ 255-282-160-104
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Longitudinal open stoping
  • Truck & Shovel / Loader
  • Transverse open stoping
  • Cemented backfill
Production Start...
Geita Gold Mine has three underground mines (Star and Comet, Nyankanga and Geita Hill) and one open pit (Nyamulilima Cuts 1 and 2) in production in 2021.


Owners

Source: p. 36
CompanyInterestOwnership
AngloGold Ashanti Ltd. 100 % Indirect
Geita Gold Mine (GGM) is wholly owned by Geita Gold Mining Limited (GGML), a subsidiary of AngloGold Ashanti Limited.

Contractors

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Deposit Type

  • Banded iron formation
  • Vein / narrow vein
  • Sedimentary - Volcanogenic


Summary:

The Geita Greenstone Belt (GGB) hosts several world-class shear-hosted Archaean lode gold deposits and forms the northern portion of the regional Sukumaland Greenstone Belt, itself one of several belts that comprise the Lake Victoria Goldfields. Other gold mines hosted in the Lake Victoria Goldfields include Golden Pride, Bulyanhulu, Tulawaka, Buzwagi and North Mara.

The east-west oriented GGB is 60km in length, up to 15km wide. The Geita terrain is comprised of upper- to mid-Nyanzian greenschist facies units, made up of clastic sediments, black shales, banded iron formation (BIF) and volcaniclastics. These have been intruded by a variety of felsic to mafic intrusive bodies, dykes and sills. Regional north-northeasterly structures hosting Proterozoic gabbro dykes are also prominent geological features in the area.

North-west trending deformation corridors divide the GGB into three distinct sub-terrains, namely the Nyamulilima Terrain in the west (hosting the Star and Comet, Ridge 8 and Roberts deposits), the Central Terrain in the central part (hosting the Nyankanga, Geita Hill, Lone Cone and Chipaka deposits) and the Kukuluma Terrain to the north-east (hosting the Matandani, Kukuluma and Area 3 West deposits).

Geita’s gold mineralisation is preferentially hosted in BIF, cherts and ironstones that have been affected by both ductile and brittle deformation associated with shear zones. The shears exploit fold axial planes as well as the contacts ........


Mining Methods

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


Summary:

The Geita gold deposits are mined as a multiple open pit and underground operation, with ore production from Star and Comet, Nyankanga and Geita Hill underground mines, and from Nyamulilima open pit. The mine is currently serviced by a CIL processing plant with an annual capacity of 5.2Mt.

Geita has been an open pit mining operation from 1999, with underground operations commencing at Star and Comet in 2016, at Nyankanga in 2017 and at Geita Hill in 2020. Underground ore is now a significant part of the feed to the plant. The Nyankanga open pit was completed in late 2020, with the new Nyamulilima open pit commencing in April 2021, providing four sources of ore to the Geita processing plant.

Open pit mining is by conventional truck and shovel methods, where production mining equipment is operated by GGM with Capital Mining Services Tanzania Limited providing production and grade control drilling services, and Orica providing blasting and explosives services. Underground mining commenced at Star and Comet in 2016 and subsequently at Nyankanga in 2017 and most recently Geita Hill in 2020.

Star and Comet underground has successfully transitioned to owner mining and the mining contractor African Underground Mining Services is used at Nyankanga and Geita Hill for underground development and stoping. The underground mining method is a combination of LOS and TOS. Cemented aggregate fill backfill is used at Nyankanga to fill the primary stopes. Ore is ........


Crushing and Grinding
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Processing

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Summary:

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Production:
Geita’s production of 623,000oz was the highest annual production level achieved in the last 15 years.

CommodityUnits2021202020192018201720162015
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required564539489527
All production numbers are expressed as metal in doré.
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Operational Metrics:

Metrics202120202019201820172016
Tonnes processed  ......  Subscription required  ......  Subscription required5.2 Mt5.3 Mt5.4 Mt5.4 Mt
Annual processing capacity  ......  Subscription required  ......  Subscription required5.3 Mt5.2 Mt5.2 Mt
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Reserves at December 31, 2021:
Reserve cut-off grades are 1.20 g/t Au for different open-pit deposits and vary from 2.57 to 3.48 g/t Au for underground depending on deposit.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 29.71 Mt Gold 2.77 g/t 2.65 M oz
Total Resource 90.51 Mt Gold 2.83 g/t 8.23 M oz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 804 / oz   608 / oz   530 / oz  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (sold) Gold USD 940 / oz   941 / oz   844 / oz  
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Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 59   157   119  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
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....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015
Subscription required Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
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................................... Subscription required 2020
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................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Fact Sheet 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Corporate Presentation 2016
Other 2016
Year-end Mineral Reserves 2016
Annual Report 2015
Year-end Mineral Reserves 2015
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