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Brazil
Serra Leste Complex (Northern System)

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 Location:
15 km N from Curionópolis, Brazil

  Address:

Curionopolis
Brazil
68523-000
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WebsiteWeb
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2054


Owners

Source: p. 46
CompanyInterestOwnership
Vale S.A. 100 % Indirect
Vale conducts iron ore business in Brazil primarily at the parent-company level, and through subsidiaries Mineracao Corumbaense Reunida S.A. (‘‘MCR’’) and Mineracoes Brasileiras Reunidas S.A. (‘‘MBR’’).

Contractors

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Deposit Type

  • Banded iron formation


Summary:

The iron deposits of the Northern Iron System are hosted in the Precambrian rocks of the Itacaiunas Supergroup. The basement of the region consists of the Pium Complex ortho-granulites, and Xingu Complex gneiss and migmatites. The volcanics and sediments of the Itacaiunas Supergroup overlie the basement, and are in turn overlain by Aguas Claras clastic sediments. Granites, gabbros, and granitoids intrude the sedimentary sequence. The Carajas ores are hosted by the Grao Para Group of the Itacaiunas Supergroup, composed of meta-basalts, meta-sediments, ironstones, and meta-rhyolites. The ore deposits lie within an approximately 300 to 400 meters thick banded chert-hematite jaspilite unit that occurs between thick volcanic units.

The lower volcanic unit is the Parauapebas Formation (4,000 to 6,000 meters thick), and consists of bimodal volcanics (dominantly massive, vesicular and porphyritic flows and agglomerate breccias of metabasalt, meta-basaltic andesite and meta-trachyandesites), with subordinate (10 to 15 percent) meta- rhyolitic tuffs and flows.

The Carajas Formation hosts the deformed banded-iron formations (BIFs) with some interbedded mafic meta-volcanics. The Cigarra Formation (upper volcanic unit) is similar to that of the Parauapebas Formation with mixed meta-sediments (fine grained tuffs, tuffaceous siitstones, phyllites, cherts and greywacke). The volcanic sequence has generally been weathered to a depth of 100 to 150 meters. The oxidation is ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Serra Leste is an open pit mining complex is located in the north of Brazil and comprises of one mining area and one beneficiation plant.

Conventional truck and shovel method is employed to extracing iron ore.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits2021202020192018201720162015
Iron Ore Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required4.14.34.22
All production numbers are expressed as lump & sinter.
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Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Probable 253.6 Mt Iron 64.7 %
Measured 295.1 Mt Iron 50.9 %
Indicated 197.2 Mt Iron 48.3 %
Measured & Indicated 492.3 Mt Iron 49.9 %
Inferred 56.7 Mt Iron 49.5 %



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 31, 2022
....................... Subscription required ....................... Subscription required Subscription required May 31, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 20-F 2018
Form 20-F 2017
Form 20-F 2016
Form 20-F 2015
Form 20-F 2014
Form 20-F 2011
Technical Report 2010
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