• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Tanzania
Bulyanhulu Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
90 km SW from Mwanza, Tanzania

  Regional Office:
Tan House Tower, Plot Number 34/1 Ursino South, New Bagamoyo Road Post Office Box 1081
Dar Es Salaam
Tanzania
Phone  ...  Subscription required
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Tanzania
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Longhole stoping
Processing
  • Gravity separation
  • Flotation
  • Concentrate leach
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life18 years (as of Jan 1, 2018)
Following the transition to reduced operations in Q4 2017 Bulyanhulu is running on tailings.

Bulyanhulu has resumed underground mining operations and is scheduled to restart processing of underground ore by the end of 2020 as a long-life underground mine.


Owners & OPERATOR

Source: p. 176
CompanyInterestOwnership
Government of Tanzania 16 % Indirect
Barrick Gold Corp. 84 % Indirect
Twiga Minerals Corporation Ltd. (operator) 100 % Direct
On January 24, 2020, Barrick announced that the Company had ratified the creation of Twiga Minerals Corporation at a signing ceremony with the President of Tanzania, formalizing the establishment of a joint venture between Barrick and the GoT and resolution of all outstanding disputes between Barrick and the GoT, including the lifting of the previous concentrate export ban, effective immediately. The GoT will receive a free carried shareholding of 16% in each of the former Acacia mines (Bulyanhulu, Buzwagi and North Mara), and will receive its half of the economic benefits from taxes, royalties, clearing fees and participation in all cash distributions made by the mines and Twiga, after the recoupment of capital investments. Twiga will provide management services to the mines.

Deposit Type

  • Vein / narrow vein


Summary:

The main rock types in the mine area are bimodal mafic and felsic volcanics rocks of the West Kahama segment of the Nyanzian age Kahama Greenstone Belt. The mafic rocks are predominantly flows, overlain by a series of felsic pyroclastics and ash tuffs. Argillites occur within the mafic flows and at the mafic/felsic contact and are the principal host for the mineralization. Mafic dykes/sills, commonly lensoid along their northwest strike, are a significant part of the lithological package southwest of the deposit itself. The Bukoli Granite, which separates the Kahama belt from the Rwamagaza belt to the west, lies approximately 3 km southwest of the mine. Together with regional faults, the Bukoli Granite forms the bounds of a rhomboid-shaped greenstone domain at Bulyanhulu.

The gold mineralization, together with copper sulphides and silver, occurs in quartz veins localized along steeply-dipping structures parallel to the regional northwest strike. Nine of these extensive quartz vein systems have been discovered so far with Reef 1, hosted by a shear zone developed preferentially along the most extensive sedimentary unit, the most significant. The ore is characterized by sub continuous lenses and veins of black quartz concentrated in narrow shear zones. An initial stage of syn-depositional barren clastic pyrite has been identified, overprinted by a polymetallic hydrothermal event associated with gold and copper mineralization. Alteration, dominantly carbonatization with the major introduction of Fe, Ca, As, Zn and S, is largely restricted to <5 m around the mineralized quartz veins. Initial fluid inclusion studies suggest the mineralizing fluid was carbonic and methane-bearing at 300-450C.


Mining Methods

  • Longhole stoping


Summary:

The Lake Victoria goldfields, Bulyanhulu is running on tailings while company plans its restart.

A restart of mining operations at Bulyanhulu is planned by the end of 2020.


Crushing and Grinding


Processing

  • Gravity separation
  • Flotation
  • Concentrate leach
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The following processes are utilised: Crushing, Grinding, Gravity, Flotation, Carbon-In-Leach, Thickening, Cyanide destruction, Filtration and Paste Backfill.

Bulyanhulu produces two saleable products: dore and copper concentrate (around 55% of production is via doré with 45% via a gold/copper concentrate).

Dore bars are produced from Gravity and CIL plants.

Copper Concentrate is produced from the flotation plant and sold to copper smelters mainly in China and Japan.

Recoveries & Grades:

CommodityParameter2019201820172016201520142013
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 1.091.28.69.38.68.77.8
Subscription required - Subscription is required.

Production:

CommodityProductUnits201920182017201620152014
Gold Metal in doré koz  ......  Subscription required  ......  Subscription required
Gold Metal in conc./ doré koz 175289274235
Copper Metal in concentrate k lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required2,583 kt2,361 kt1,523 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required909 kt993 kt909 kt
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven In-Situ (UG) 2,412,000 t Gold 11.01 g/t 854,000 oz
Proven In-Situ (UG) 2,412,000 t Copper 0.53 % 28,089,000 lbs
Proven In-Situ (UG) 2,412,000 t Silver 8.91 g/t 691,000 oz
Probable In-Situ (UG) 5,221,000 t Gold 10.56 g/t 1,773,000 oz
Probable Tailings 2,702,000 t Gold 1.23 g/t 107,000 oz
Probable In-Situ (UG) 5,221,000 t Copper 0.56 % 63,913,000 lbs
Probable In-Situ (UG) 5,221,000 t Silver 6.19 g/t 1,040,000 oz
Proven & Probable In-Situ (UG) 7,634,000 t Gold 10.7 g/t 2,627,000 oz
Proven & Probable Tailings 2,702,000 t Gold 1.23 g/t 107,000 oz
Proven & Probable In-Situ (UG) 7,634,000 t Copper 0.55 % 92,002,000 lbs
Proven & Probable In-Situ (UG) 7,634,000 t Silver 7.05 g/t 1,731,000 oz
Proven & Probable Tailings 2,702,000 t Silver
Proven & Probable Total 10,336,000 t Silver 5.21 g/t 1,731,000 oz
Measured In-Situ (UG) 566,000 t Gold 13.49 g/t 245,000 oz
Measured In-Situ (UG) 566,000 t Copper 0.61 % 7,602,000 lbs
Measured In-Situ (UG) 566,000 t Silver 10.43 g/t 190,000 oz
Indicated In-Situ (UG) 7,387,000 t Gold 7.97 g/t 1,893,000 oz
Indicated In-Situ (UG) 7,387,000 t Copper 0.34 % 54,959,000 lbs
Indicated In-Situ (UG) 7,387,000 t Silver 5.37 g/t 1,276,000 oz
Measured & Indicated In-Situ (UG) 7,952,000 t Gold 8.36 g/t 2,138,000 oz
Measured & Indicated In-Situ (UG) 7,952,000 t Copper 0.36 % 62,561,000 lbs
Measured & Indicated In-Situ (UG) 7,952,000 t Silver 5.73 g/t 1,466,000 oz
Inferred In-Situ (UG) 15,004 kt Gold 11.76 g/t 5,672 koz
Inferred In-Situ (UG) 15,004 kt Copper 0.62 % 204,422 k lbs
Inferred In-Situ (UG) 15,004 kt Silver 9.01 g/t 4,347 koz

Commodity Production Costs:

CommodityUnits2019201820172016201520142013
Cash costs (sold) Gold USD  ......  Subscription required† 840 / oz† 722 / oz† 797 / oz† 812 / oz† 890 / oz†
Total cash costs Gold USD  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required†
All-in sustaining costs (sold) Gold USD  ......  Subscription required† 1,373 / oz† 1,058 / oz† 1,253 / oz† 1,266 / oz† 1,344 / oz†
All-in costs Gold USD  ......  Subscription required
All-in costs Gold USD  ......  Subscription required†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2019
Processing costs ($/t milled) USD 1.43

Financials:

Units2019201820172016201520142013
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 42.4   23.4   25.2  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 95.6   137.69   175.49  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 319.12   286.68   279.42  
EBIT M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 6.54   30.5   32.4  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 59.1   68.9   68.3  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Aug 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Aug 7, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Quarterly Report 2017
Annual Report 2016
Corporate Presentation 2016
Annual Report 2014
Corporate Presentation 2014
Project Description 2009
Subscription required - Subscription is required.

Aerial view:

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2020 MDO Data Online Inc.