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Brazil
Alegria | Germano Mine (Mariana Complex)

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 Location:
20 km NW from Mariana, Brazil

  Address:
Rodovia MG-129, km 117,5, s/n Caixa Postal 22
Mariana
Brazil
35420-000
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Processing
  • Crush & Screen plant
  • Desliming
  • Flotation
Mine Life38 years (as of Jan 1, 2015)
Samarco comprises a mine and three concentrators located in the Brazilian state of Minas Gerais, four pellet plants and a port located in Anchieta in the state of Espírito Santo.

In December 2020, Samarco commenced the gradual resumption of its operations, with the integrated restart of iron ore extraction and beneficiation in the Germano complex, located in Mariana, state of Minas Gerais, and pelletizing at the Ubu complex, located in Anchieta, state of Espirito Santo. Samarco’s operations are resuming with approximately 7 to 8 Mtpy production capacity, with the use of one of three concentrators to beneficiate iron ore in the Germano complex and one of four pellet plants in the Ubu complex, representing 26% of Samarco’s productive capacity. The integrated restart of operations occurs after extensive commissioning tests after the five-year halt.
Latest NewsBrazil's Samarco to add revenue, hit output goal sooner after Vale deal     February 3, 2022


Owners

Source: p. 28,57,237
CompanyInterestOwnershipInvestor's Info
Vale S.A. 50 % Indirect
BHP Group Ltd. 50 % Indirect
Samarco Mineracao S.A. (operator) 100 % Direct
BHP Brasil 50% of Samarco Mineração S.A. Vale S.A. 50%. Samarco is operated independently by Samarco Mineração S.A.

Samarco is a non-operated joint venture (NOJV) owned by BHP Billiton Brasil Ltda (BHP Brasil) and Vale S.A. (Vale), with each having a 50 per cent shareholding.

Deposit Type

  • Banded iron formation hosted


Summary:

Itabirite ore type.

Samarco’s Alegria mine complex and Germano mine, located in Mariana, Minas Gerais, is in the same region as Vale's Southeastern System - Quadrilatero Femfero (Iron Quadrangle).

Ore reserves with high ratios of itabirite ore relative to hematite ore type. Itabirite ore has iron grade of 35-60%.

The Quadrilátero Ferrífero (QF) comprises an area of about 7000 km2 and hosts one of the largest concentrations of lateritic iron-ore deposits in the world. The QF is located in central Minas Gerais state, southeastern region of Brazil (Dorr, 1965). The QF has a quadrangular shape due to the dome and basin structures of the Minas Supergroup. Most of the iron ore in the QF are hosted in the oxidized, metamorphosed and heterogeneously deformed Banded Iron Formations (BIFs) of the Cauê Formation, the so-called itabirites. The BIFs are altered sedimentary deposits with laminated rocks formed by alternating layers of silica and hematite magnetite, as well as carbonates and iron silicates.

The Quadrilátero Ferrífero is located at the southeastern border of the São Francisco Craton, southeastern Brazil (Fig. 1). According to Alkmim and Marshak (1998) the most important lithostratigraphic units of the Quadrilátero Ferrífero are: (1) the Archean crystalline basement, (2) the Rio das Velhas Supergroup, (3) the Minas Supergroup, (4) the Post-Minas Intrusives and (5) the Itacolomi Group.

Basement crystalline rocks include a gneiss/migmatite complex and two generations of voluminous Late Archean plutons: calk-alkaline and anorogenic granites (Alkmim and Marshak, 1998). The Rio das Velhas Supergroup consists of greenstone (basalt and komatiite), rhyolitic lava and intercalated sedimentary rocks. Sedimentary units of the Rio das Velhas Supergroup include Algoma-type banded-iron formations (BIFs), carbonates and siliciclastics. The Minas Supergroup is a metasedimentary unit that unconformably overlies the Rio das Velhas Supergroup. According to Alkmim and Marshak (1998), the Minas Supergroup strata resist erosion, forming ridges that tower above the regions which are underlain by less resistant basement or greenstone rocks. These characteristics of the Minas Supergroup shaped the geomorphology of the southern Brazil highlands giving rise to high relief in this region. Alluvial conglomerate and sandstone made up the basal units of the Minas Supergroup. These units grade upward into shallow-water marine pelites of the Tamanduá and Caraça Groups. The Lake Superior-type Cauê banded-iron Formation lies on Caraça metasediments. The Cauê Formation is a carbonate sequence of the Gandarela Formation. Lying locally unconformably on the Gandarela Formation, the Piracicaba Group comprises a thick pile of shallow-water and deltaic strata. Separated from the Piracicaba Group by an unconformity, the Sabará Group is a thick sequence of turbidites, tuffs, volcaniclastics, conglomerates and diamictites derived from a source to the east–southeast. The PostMinas intrusives comprise thin, undated, pegmatite veins cutting Minas rock (Alkmim and Marshak, 1998; Herz, 1970). Finally, the Itacolomi Group is a unit consisting of alluvial sandstones, conglomerates and minor pelites (Dorr, 1969) deposited in intramontane grabens (Alkmim and Martins-Neto, 2012).


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open-cut mining operations.


Crushing and Grinding


Processing

  • Crush & Screen plant
  • Desliming
  • Flotation

Source: Subscription required

Summary:

Samarco’s gradual restart of operations includes 1 concentrator and a new system of tailings disposal combining a confined pit and filtration plant for dry stacking of sandy tailings. Beneficiation plants, pipelines, pellet plants and port facilities.

Recoveries & Grades:

CommodityParameter20152014
Iron Ore Recovery Rate, % 53.655.1

Production:

CommodityUnits20212015
Iron Ore Mt  ......  Subscription required25
All production numbers are expressed as pellets.

Operational Metrics:

Metrics202020192015
Annual production capacity  ......  Subscription required8 Mt of iron ore
Ore tonnes mined  ......  Subscription required25.4 Mt
Subscription required - Subscription is required.

Reserves at June 30, 2021:
Cut-off grade was 22%Fe.

Operations have recommenced and an Ore Reserves estimate is in progress.

CategoryTonnage CommodityGrade
Measured 3,290 Mt Iron 39.1 %
Indicated 1,950 Mt Iron 37.4 %
Inferred 660 Mt Iron 37.2 %
Total Resource 5,900 Mt Iron 38.3 %

Financials:

Units2021202020192018201720162015
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required30   28   937   2,810  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required-1,558   -1,520   -2,182   1,283  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 9, 2022
....................... Subscription required ....................... Subscription required Subscription required May 9, 2022
....................... Subscription required ....................... Subscription required Subscription required May 9, 2022
....................... Subscription required ....................... Subscription required Subscription required May 9, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 16, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Form 20-F 2018
Annual Report 2017
Annual Report 2017
Annual Report 2016
Form 20-F 2016
Annual Report 2015
Form 20-F 2015
Form 20-F 2015
Form 20-F 2014
Other 2014
Subscription required - Subscription is required.

News:

NewsDate
Brazil's Samarco to add revenue, hit output goal sooner after Vale deal February 3, 2022
BHP, Vale cleared to resume Samarco operations October 28, 2019

Aerial view:

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