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Brazil
Alegria | Germano Mine (Mariana Complex)

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 Location:
20 km NW from Mariana, Brazil

  Project Contacts:
Rodovia MG-129, km 117,5, s/n Caixa Postal 22
Mariana
Brazil
35420-000
Phone  ...  Subscription required
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  • Filings & News

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Overview

StageRestarting
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life2053
Vale and BHP cleared for Samarco iron ore restart. Vale says its joint venture Samarco Mineração SA division has been given clearance to restart operating activities at its Germano Complex, in Minas Gerais, Brazil, some four years after a dam collapse shuttered the operation.

Following the implementation of the filtration process, and subject to shareholder approval, Samarco currently expects to restart its operations around the end of 2020, Vale says.

Samarco expects to be able to restart operations through one concentrator and produce some 7-8 Mt/y following the installation of the filtration technology.
Latest NewsBHP approves $US44 million funding for Samarco restart     November 6, 2019


Owners & OPERATOR

Source: p. 78
CompanyInterestOwnershipInvestor's Info
Vale S.A. 50 % Indirect
BHP Group Ltd. 50 % Indirect
Samarco Mineracao S.A. (operator) 100 % Direct
BHP Billiton Brasil Limitada and Vale S.A. each have a 50 per cent shareholding in Samarco Mineração S.A. (Samarco), the owner of the Samarco iron ore mine in Brazil.

Deposit Type

  • Banded iron formation


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:


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

The two beneficiation plants, located at the site, process the run-of-mine by means of standard crushing, milling and concentration steps, producing pellet feed and sinter feed.

Conveyor systems are used to extract the ore and convey it from the mines. Ore beneficiation then occurs in concentrators, where crushing, milling, desliming and flotation processes produce iron concentrate. The concentrate leaves the concentrators as slurry and is pumped through the slurry pipelines from the Germano facilities to the pellet plants in Ubu, Anchieta, where the slurry is processed into pellets. The iron ore pellets are then heat treated. The pellet output is stored in a stockpile yard before being shipped out of the Samarco-owned Port of Ubu in Anchieta.

Recoveries & Grades:

CommodityParameter20152014
Iron Ore Recovery Rate, %  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Projected Production:

CommodityUnits20152014
Iron Ore Mt 2524
All production numbers are expressed as pellets.

Operational Metrics:

Metrics201920152014
Annual production capacity  ......  Subscription required
Ore tonnes mined  ......  Subscription required25.4 Mt26.2 Mt
Subscription required - Subscription is required.

Reserves at June 30, 2019:

CategoryTonnage CommodityGrade
Measured 3,340 Mt Iron 39 %
Indicated 2,150 Mt Iron 37.2 %
Inferred 950 Mt Iron 37.2 %
Total Resource 6,440 Mt Iron 38.1 %

Financials:

Units201920182017201620152014
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,810   3,269  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,283   1,337  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 22, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

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

News:

NewsDate
BHP approves $US44 million funding for Samarco restart November 6, 2019
BHP, Vale cleared to resume Samarco operations October 28, 2019

Aerial view:

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