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Chile
Radomiro Tomic Mine

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 Location:
26 km N from Calama, Chile

  Address:
Avenida Central Sur, N° 1990 Villa Ayquina
Calama
Chile
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Bacterial leaching
  • Flotation
  • Heap leach
  • Solvent Extraction & Electrowinning
Mine Life2065


Owners

Source: p. 15, 20
CompanyInterestOwnership
Codelco Corp. 100 % Indirect
In 1997, Codelco inaugurated the first operation led by Chileans, the Radomiro Tomic mine.

Codelco Corp. operates seven mine sites (known as “divisiones”): Chuquicamata, Ministro Hales, Radomiro Tomic, Gabriela Mistral, Salvador, Andina, El Teniente, in addition to the Ventanas Smelter and Refinery.

Deposit Type

  • Porphyry


Summary:

The Chuquicamata district includes the Chuquicamata and Radomiro Tomic megadeposits, the exotic copper deposit Mina Sur, the newly developed Ministro Hales mine (formerly known as Mansa Mina) located 5.5 km south of Chuquicamata, and the deposits of the Toki cluster (Toki, Genoveva, Quetena, Miranda, and Opache) located about 15 km SSW of Chuquicamata. Total identified resources for the Chuquicamata district are estimated at 107.4 Mt of fine copper considering a cutoff Cu grade of 0.2 wt% (Codelco Memoria Anual 2011). Inferred resources for the cluster are estimated at about 20 Mt of fine copper, with Toki contributing with ca. 11.2 Mt and Quetena with ~3.8 Mt (Camus 2003; Rivera et al. 2006).

The deposits of the district are located in the Late Eocene–Early Oligocene (43–31 Ma) porphyry copper belt that extends for about 1,400 km, from 18°S to 31°S (Sillitoe 1988; Sillitoe and Perelló 2005). The rocks in the area range in age from Paleozoic to Tertiary. The main structural feature observed is the West Fault, which is part of the Domeyko Fault System (Boric et al. 1990; Dilles et al. 1997) and divides the district in two domains: an eastern domain and a western domain.

The main copper oxide minerals in the Radomiro Tomic deposit are atacamite, copper clays, chrysocolla, and copper wad. Their relative abundance provides the basis for dividing the oxide zone into two major geologic units: the Upper Oxide unit and the Lower Oxide unit. Furthermore, the study of mineral abundances in the oxide zones allowed the definition of an oxide mineral zonation that consists of five mineral assemblages, based on the relative proportion of the three main copper oxide components: atacamite, copper clays, and chrysocolla. These classifications allow both an understanding of the distribution of copper minerals throughout the zone and an interpretation of the supergene processes that formed it.

The Upper Oxide unit is mineralogically heterogeneous. The copper content is furnished, on average, by 40 vol percent atacamite, 31 vol percent copper clays with minor chysocolla and copper wad. The Lower Oxide unit is more homogeneous. Atacamite accounts for 70 vol percent of the copper ore minerals with minor amounts of copper clays and chrysocolla. Copper and chlorine concentrations and porosity are greater in the Upper Oxide unit, whereas hematite, chalcocite, and molybdenite concentrations and specific gravity are greater in the Lower Oxide unit.

The vertical distribution of the Cl/Cu ratio shows a chlorine-deficient zone located between elevations of 2,780 and 2,870 m. Between these elevations, the proportion of atacamite is lower and the proportion of copper clays, chrysocolla, and copper wad is higher than in other portions of either the Upper Oxide or Lower Oxide units. [2001, Oxide Mineralization at the Radomiro Tomic Porphyry Copper Deposit, Northern Chile P.1]


Mining Methods

  • Truck & Shovel / Loader


Summary:

Radomiro Tomic is mined by open pit extraction method.


Crushing and Grinding


Processing

  • Bacterial leaching
  • Flotation
  • Heap leach
  • Solvent Extraction & Electrowinning

Source: Subscription required

Summary:

Heap bioleaching of sulphides at room temperature is currently in industrial application at Radomiro Tomic Division.


Production:

CommodityProductUnits201920182017201620152014
Copper Cathode t  ......  Subscription required  ......  Subscription required318,878318,255315,747327,278
Molybdenum Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.


Reserves at December 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 1,943 Mt Copper 0.49 % 9.4 Mt
Measured 1,214 Mt Copper 0.48 % 5.9 Mt
Indicated 1,368 Mt Copper 0.44 % 6 Mt
Inferred 1,700 Mt Copper 0.41 % 7 Mt
Total Resource 4,282 Mt Copper 0.44 % 18.9 Mt

Commodity Production Costs:

CommodityUnits201820162015
C1 cash costs Copper USD  ......  Subscription required 1.35 / lb 1.41 / lb
Subscription required - Subscription is required.

Financials:

Units20192018201720162015
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,630  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 410.32  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 291.67  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 105  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Corporate Presentation 2017
Annual Report 2016
Corporate Presentation 2016
Financial Review 2016
Annual Report 2015
Other 2013
Other 2001
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Aerial view:

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