Overview
Stage | Production |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Processing |
- Crush & Screen plant
- Desliming
- Flotation
|
Mine Life | 38 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 News | Brazil's Samarco to add revenue, hit output goal sooner after Vale deal February 3, 2022 |
Source:
p. 28,57,237
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).
Summary:
Open-cut mining operations.
Processing
- Crush & Screen plant
- Desliming
- Flotation
Source:
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:
Commodity | Parameter | 2015 | 2014 |
Iron Ore
|
Recovery Rate, %
| 53.6 | 55.1 |
Production:
Commodity | Units | 2021 | 2015 |
Iron Ore
|
Mt
| ......  | 25 |
All production numbers are expressed as pellets.
Operational Metrics:
Metrics | 2020 | 2019 | 2015 |
Annual production capacity
| ......  | 8 Mt of iron ore | |
Ore tonnes mined
| ......  | | 25.4 Mt |
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Reserves at June 30, 2021:
Cut-off grade was 22%Fe.
Operations have recommenced and an Ore Reserves estimate is in progress.
Category | Tonnage | Commodity | Grade |
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:
| Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
Revenue
|
M USD
| ......  | ......  | ......  | 30 |
28
|
937
|
2,810
|
Operating Income
|
M USD
| ......  | ......  | ......  | -1,558 |
-1,520
|
-2,182
|
1,283
|
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News:
Aerial view:
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