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Suriname
Rosebel Mine

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 Location:
81 km S from Paramaribo, Suriname

  Regional Office:
Heerenstraat 8
P.O.Box 2973
Paramaribo
Suriname
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Fax(597)-478-447
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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
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Smelting
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life2033
Latest NewsIAMGOLD Restarts Operations at Rosebel Gold Mine     July 24, 2020


Owners

Source:
CompanyInterestOwnership
IAMGOLD Corp. 95 % Indirect
Rosebel Gold Mines N.V. (Rosebel), established on May 8, 2002, is a subsidiary of IAMGOLD. IAMGOLD holds 95% of the share capital of Rosebel, while the Republic of Suriname owns the remaining 5%.

Deposit Type

  • Vein / narrow vein
  • Orogenic


Summary:

The Rosebel concession lies within the Paleoproterozoic Guiana Shield. The Suriname portion of the shield is characterized by discrete corridors of low grade metamorphic rocks (greenstone belts), separated by large granite gneiss terranes.

The local greenstone belt stratigraphy comprises a basal mafic to felsic volcanic package (Paramaka Formation) and two overlying volcano-sedimentary sequences (Armina and Rosebel Formations). The Armina Formation includes intermediate to mafic volcanics and volcaniclastics, trubidite and minor conglomerate whereas the unconformably overlying Rosebel Formation is mainly comprised of coarser grained sandstone and conglomerate with subordinate mudstone. The entire sequence has been deformed by east-southeast to east-west striking folds and faults. A large tonalitic pluton occurs in the southern part of the property (Brinks Granite). Metamorphism is greenschist to lower amphibolites facies.

The Rosebel property contains eight orogenic gold deposits distributed along three major structures. The northern mineralized trend has a strike length of 12 kilometres and hosts the Pay Caro, East Pay Caro, Koolhoven and J-Zone deposits. The southern mineralized trend has a strike length of 15 kilometres and hosts the Mayo, Royal Hill and Roma deposits. The Rosebel deposit occurs at the eastern extremity of the central mineralized trend.

Primary gold mineralization occurs in several different styles on the property but is typically associated with multiple generations of quartz, quartz-carbonate and quartz-carbonate-tourmaline veining. Vein arrays are thought to have developed preferentially along pre-existing structural heterogeneities such as lithological contacts, fold closures and sub-vertical shear cooridors during major deformation phases. For example, gold mineralization at the Rosebel deposit is associated with north dipping quartz and quartz carbonate vein sets localised along shear corridors developed at contacts between sandstone and siltstone units of the Rosebel Formation. Low grade gold mineralization is widely dispersed in sericitic alteration halos surrounding these structures. Diamond drilling has intersected economic gold mineralization to a vertical depth of 200 metres below surface and the continuity of the mineralization can be traced for over two kilometres along strike. The deposit, like most others on the property, remains open on strike and at depth.

Gold mainly occurs in its native form as free grains, often precipitated close to vein selvages or as intergrowths in pyrite crystals within veins and adjacent country rocks. Mineralized quartz veins range from a few centimetres up to 4 metres in thickness and are typically associated with a wall-rock alteration assemblage comprising sericite, chlorite, carbonate, tourmaline, pyrite, pyrrhotite and plagioclase. Alteration halos range from 0.25 metres around individual veins to over 20 metres around major vein sets.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining at Rosebel has been carried out at eight open pits to date: Royal Hill, Pay Caro, East Pay Caro, Koolhaven, Rosebel, Roma, J-Zone and Mayo. Mining is by conventional open pit methods, using excavators and trucks. Material is designated as soft rock, transition or hard rock with the latter two types requiring blasting.


Crushing and Grinding


Processing

  • Gravity separation
  • Smelting
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The nameplate capacity of the process plant is 12.5 Mtpa. The plant has been operating near this capacity on a sustained long term basis. This near nameplate design capacity, is expected for 2018 and beyond.

The metallurgical process has; a conventional grinding (including gravity) circuit, dewatering circuit, leach circuit, carbon in leach (CIL) circuit, elution circuit, and refinery. Gold recovery facilities include acid washing, carbon stripping, and electro winning, followed by bullion smelting and carbon regeneration. The process was developed to accommodate varying ratios of soft rock, transition, and hard rock ores.

Run-of-mine from the hard rock stockpile is delivered to the primary crushing facility by haul trucks and front-end loaders. Ore delivery from the mine is on a 24 hour per day schedule. The primary crusher incorporates a 1.37 m x 1.88 m gyratory crusher, followed by a vibrating grizzly and a 2.1 m secondary crushing system that produces the req ........

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 0.710.820.830.820.80.860.94
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018201720162015
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required318312302
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required64,129 kt63,512 kt63,066 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required14,735 kt14,080 kt13,851 kt
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required49,394 kt49,432 kt49,215 kt
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required12,604 kt12,291 kt13,050 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required3.4 3.5 3.6
Plant annual capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 29,522 kt Gold 0.6 g/t 574 koz
Probable 92,356 kt Gold 1 g/t 2,947 koz
Proven & Probable 121,878 kt Gold 0.9 g/t 3,521 koz
Measured 35,276 kt Gold 0.6 g/t 698 koz
Indicated 247,210 kt Gold 0.9 g/t 7,397 koz
Inferred 64,191 kt Gold 0.9 g/t 1,785 koz

Commodity Production Costs:

CommodityUnits2019201820172016201520142013
Cash costs Gold USD  ......  Subscription required  ......  Subscription required 647 / oz 661 / oz 785 / oz 732 / oz 639 / oz
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required 716 / oz 729 / oz 849 / oz 804 / oz 718 / oz
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required 931 / oz 988 / oz 1,165 / oz 1,045 / oz 1,063 / oz
Subscription required - Subscription is required.

Financials:

Units20202019201820172016201520142013
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 86.9   62   121.7  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 92   83.8   140.6  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment as of November 5, 2018:
HME TypeModelSizeQuantityStatus
Backhoe ....................... Subscription required 2 Proposed
Backhoe ....................... Subscription required 4 Existing
Dozer (crawler) ....................... Subscription required 24 Existing
Dozer (rubber tire) ....................... Subscription required 2 Existing
Drill ....................... Subscription required 165 mm 4 Existing
....................... Subscription required ....................... Subscription required 2 Proposed
Drill ....................... Subscription required 165 mm 11 Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required 4 Proposed
Drill ....................... Subscription required 165 mm 2 Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required 1 Proposed
Excavator ....................... Subscription required 10 Existing
....................... Subscription required ....................... Subscription required 1 Proposed
Grader ....................... Subscription required 1 Existing
Grader ....................... Subscription required 1 Existing
Grader ....................... Subscription required 3 Existing
....................... Subscription required ....................... Subscription required 1 Proposed
Loader ....................... Subscription required 2 Existing
....................... Subscription required ....................... Subscription required 1 Proposed
Shovel ....................... Subscription required 5 Existing
Truck (haul) ....................... Subscription required 36 Existing
....................... Subscription required ....................... Subscription required 18 Proposed
....................... Subscription required ....................... Subscription required 20 Proposed
....................... Subscription required 10 Proposed
Truck (water) ....................... Subscription required 4 Existing
....................... Subscription required ....................... Subscription required 1 Proposed
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Management Discussion & Analysis 2017
Corporate Presentation 2016
Fact Sheet 2016
Management Discussion & Analysis 2016
Annual Report 2014
Subscription required - Subscription is required.

News:

NewsDate
IAMGOLD Restarts Operations at Rosebel Gold Mine July 24, 2020
EURO Ressources comments on Rosebel mine work stoppage July 20, 2020
IAMGOLD Delivers First Ore from Saramacca to Rosebel Mill October 31, 2019
IAMGOLD Announces the Resumption of Mining Operations at the Southern Pits of Its Rosebel Gold Mine September 23, 2019
IAMGOLD Announces Restart of Mining at Rosebel August 26, 2019
IAMGOLD Announces Initial Drilling Results Testing the Underground Mining Potential at Its Saramacca Project, Suriname August 7, 2019

Aerial view:

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