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Brazil
Corumba Mine (Midwestern System)

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 Location:
21 km S from Corumbá, Brazil

  Address:
Rua Cabral 1555, Centro
Corumbá
Brazil
79332-030
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Processing
  • Crush & Screen plant
Mine Life2060
Vale S.A. periodically reviews the economic viability of their iron ore reserves in light of changes in the iron ore industry. Company has determined that the Urucum and Corumba mines are not economically viable based on ´ three-year average historical prices. Accordingly, we are not reporting reserves at those facilities since 2015.


Owners

Source:
CompanyInterestOwnership
Mineracao Corumbaense Reunida S.A. (operator) 100 % Direct
J&F Mineração Ltda. 100 % Indirect
On April 6, 2022, Vale S.A. signed a binding agreement for the sale, to J&F Mineração Ltda., controlled by J&F Investimentos S.A., of all the shares issued by Mineração Corumbaense Reunida S.A., Mineração Mato Grosso S.A., International Iron Company, Inc. and Transbarge Navegación Sociedad Anónima, which hold Iron Ore, Manganese Ore and Logistics assets in the Midwestern System, including the full assumption by the buyer of the take-or-pay logistics contracts, subject to the consent of the applicable counterparties. Under the terms agreed, the enterprise value of the transaction is approximately US$ 1.2 billion for a set of assets

Deposit Type

  • Banded iron formation


Summary:

Corumba ore reserves are comprised of hematite ore type, which generates operations lump ore predominantly.

The manganese and iron deposits of the Morro do Uruclun are located about 25 kilometers south of the city of Corumba, Mato Grosso, Brazil.

The deposits of both manganese and iron occur in the Jacadigo series, of unknown but probably late pre-Cambrian or early Paleozoic age. This has been subdivided into the Urucum, the Corrego das Pedras, and the Band' Alta formations. The Urucum formation, between 400 and 500-meters thick, consists of continental deposits of arkose and conglomerate. It grades upward into the Corrego das Pedras formation, about 95 meters thick, in which ferruginous arkose at the base grades upward into ferruginous sandstone and ferruginous jasper. Above the Corrego daa Pedras formation is the Band' Alta formation, at least 300 meters in thickness, which contains the deposits of manganese and iron. At the base of the Band' Alta is a widespread bed of the manganese oxide cryptomelane. This is overlain by banded siliceous hematite, which makes up the greater part of the formation but is interbedded, about 40 meters or more above the base, with other lenticular beds or cryptomelnns, and, higher in the section, with lenticular beds of clastic rocks, including siltstone, sandstone, and, rarely, conglomerate. The formation is cut off at the top by an erosion surface.

The Corumba formation consists of calcareous shales and argillites, sandy shales, black, well-bedded limestone, gray limestone and dolomite, andwhlte dolomite. It extends at least 200 kilometers westward from Corumba into Bolivia, 100 kilometers to the south, more than 100 kilometers to the north, and an unknown distance to the east.

In many localities the Corumba formation has been marmorized. Although this recrystallization has been attributed to metamorphic effects of the intrusive granite which crops out near Fazenda do Urucum, it is more probably the result of dynamic stresses induced during the complex deformation of the area. There is no known evidence to prove or even strongly indicate that the granite is intrusive into the Corumba formation.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open-pit mining operations.


Crushing and Grinding


Processing

  • Crush & Screen plant

Source: Subscription required

Summary:

The beneficiation process for the run-of-mine consists of standard crushing and classification steps, producing lump ore and sinter feed.

Recoveries & Grades:

CommodityParameter2021202020192018201720162015
Iron Ore Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required7267.973.964.1

Production:

CommodityProductUnits2021202020192018201720162015
Iron Ore Lump & Fines Mt  ......  Subscription required
Iron Ore Lump & Sinter Mt  ......  Subscription required  ......  Subscription required2.52.41.92.8
Subscription required - Subscription is required.


Reserves at December 31, 2014:

CategoryTonnage CommodityGrade
Proven & Probable 310.8 Mt Iron 62.2 %


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 27, 2021
....................... Subscription required ....................... Subscription required Subscription required May 27, 2021
....................... Subscription required ....................... Subscription required Subscription required May 27, 2021
Subscription required - Subscription is required.


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 2013
Other 1945
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