• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Peru
Cerro de Pasco Operation (Paragsha Mine, Paragsha-San Expedito Plant, Raul Rojas Mine, Vinchos Mine)

This page is not tailored to
devices with screen width under 750 px.
 Location:
174 km NE from Lima, Peru

  Regional Office:
Av. Santo Toribio No. 115, Of. 702 San Isidro
Lima
Peru
Phone  ...  Subscription required
Fax+511-712-3729
EmailEmail
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Peru
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeOpen Pit / Underground
Commodities
  • Zinc
  • Lead
  • Copper
  • Silver
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Cut & Fill
  • Wood bracing and shoring
  • Cemented backfill
  • Hydraulic backfill
Processing
  • Flotation
Mine Life17 years (as of Jan 1, 2020)
On November 28th, 2019 Cerro de Pasco Resources announced the acquisition of all mining and processing operations at Cerro de Pasco, Peru. Highlights of the Acquisition include two operating companies with current combined revenues of over US$120M/year, over 150Mt of Resources, and all associated assets: two base metal concentrators (permitted at 19.3K tpd), a precious metals leaching plant (permitted at 2.5K tpd), two underground shafts, 11,000 Ha of concessions, and a fully operational tailings storage facility. CDPR estimates the replacement value of all associated assets to exceed US$ 700M.
Latest NewsCerro de Pasco Resources Provides Corporate and Transaction Update Français     December 22, 2020


Owners

Source: p. 3
CompanyInterestOwnership
Cerro de Pasco Resources Inc. 100 % Direct
On November 27, 2019, the Company has executed a definitive share purchase agreement with Volcan Compañia Minera S.A.A. and its subsidiaries (collectively, “Volcan”), whereby CDPR will acquire all of the issued shares of Oxidos de Pasco S.A.C. (“Oxidos”), Empresa Administradora de Cerro S.A.C (“Cerro SAC”) and Remediadora Ambiental S.A.C. (together the “Target Companies”). The arm’s length transaction (the “Transaction”) will provide CDPR ownership and operation of all mining and processing assets in Cerro de Pasco, Central Peru.

Deposit Type

  • Carbonate hosted


Summary:

Geology of the Cerro de Pasco Area.
At Cerro de Pasco, the magmatic center was emplaced directly west of a major high-angle, N 15° W-striking reverse fault (“the Longitudinal Fault”), mainly intruding weakly metamorphosed shales of the Middle Paleozoic Excelsior Group, the oldest lithological unit in the area, and polymictic conglomerates and sandstones of the Middle-Late Triassic Mitu Group (Spikings et al., 2016). East of the Longitudinal Fault there is a thick sequence (about 1,000 m) of massive carbonate rocks, mainly limestones with locally sandy intercalations, black bituminous limestones, and beds with chert nodules belonging to the Late Triassic Chambará Formation. The latter is part of the Pucará Group that overlies the Excelsior and Mitu groups (Rosas et al., 2007; Angeles, 1999). The sedimentary sequence was folded prior to the Mid-Miocene magmatism, thus creating the main structural feature in the area, the Cerro anticline with a north-south axis and plunging to the north (Baumgartner et al., 2008; Angeles, 1999).

The magmatic core of the Cerro de Pasco district consists of a large diatreme-dome complex, 2.5 km in diameter, which was formed by a succession of phreatomagmatic and magmatic events (Baumgartner et al., 2009; Rogers, 1983). An early phase of explosive activity produced a diatreme-breccia known locally as the Rumiallana agglomerate, which is the most common lithology in the magmatic complex and has been dated at 15.36 ± 0.03 Ma and was followed by emplacement at 15.40 ± 0.07 Ma of dacitic to rhyodacitic lava-dome complexes along the western margin of the diatreme (Baumgartner et al., 2009).

East-west–trending quartz-monzonite porphyry dykes cut the diatreme breccias and the magmatic domes. These dykes do not propagate into the Excelsior shales west of the diatremedome complex; to the east they crosscut locally the carbonate sequence. Two of these dykes have been dated at 15.35 ± 0.05 and 15.16 ± 0.04 Ma (Baumgartner et al., 2009). The end of the phreatomagmatic and magmatic activity at Cerro de Pasco is marked by the emplacement of
numerous, 20 cm to 3 m-wide, E-W–trending, milled-matrix fluidized breccia dykes, occurring in various parts of the diatreme-dome complex.

Following this event, epithermal base metal mineralization took place, mainly in carbonate rocks along the eastern margin of the magmatic complex (Baumgartner et al., 2008; Einaudi, 1977). A striking feature of the Cerro de Pasco mineralization is the occurrence of an NS- trending, 1.5 km-long, 250 m-wide, and more than 550 m-deep, funnel-shaped massive pyrite- quartz body that replaced mainly carbonate rocks from the Pucará Group, as well as, subordinately, the diatreme dome complex itself (Baumgartner et al., 2008; Baumgartner, 2007). At least five main pipe-like, up to 150 m-wide, massive pyrrhotite-dominated bodies have been recognized. They grade outward into massive Fe- rich sphalerite (up to 80% in volume) and galena.

Pb-Zn-Ag-Cu Mineralization at the Cerro the Pasco Mine.
Epithermal base metal mineralization at Cerro de Pasco occurred principally in carbonate rocks along the eastern margin of the magmatic complex (Baumgartner et al., 2008; Einaudi, 1977). An important structure related to the Cerro de Pasco mineralization is a NS-trending, funnel-shaped massive pyrite-quartz body that replaced mainly carbonate rocks from the Pucará Group, and in less measure, the diatreme dome complex (Baumgartner, 2007; Einaudi, 1977; Ward, 1961). Five main pipe-like massive pyrrhotite-dominated bodies reaching up to 150 m in width have been identified. They are hosted by the pyrite-quartz body and the Pucará carbonate rocks and locally crosscut the diatreme breccia. The pipe-like pyrrhotite bodies are characterized by low sulfidation state assemblages (pyrrhotite + Fe-rich sphalerite + arsenopyrite, as well as pyrite + Fe-rich sphalerite). The pipes core zone, only observed at deep levels, is composed of the assemblage pyrrhotite-quartz-wolframite. The intermediate-level assemblage consists of pyrrhotite-sphalerite-chalcopyrite-stannite (Einaudi, 1977). The outer zone, which is present over the entire vertical extent of the pyrrhotite bodies and which includes the Zn-Pb ore, consists of the association pyrrhotite + Fe-rich sphalerite + arsenopyrite with minor marcasite, tennantite, chalcopyrite, chlorite, muscovite, siderite, and calcite. According to Baumgartner et al. (2008, 2009), high- sulfidation mineralization took place prior to the formation of the pyrite-quartz body. The mineralization consists of EW-trending Cu-Ag- Au-Zn-Pb) enargite pyrite veins hosted by the diatreme breccia and includes at least eight zoned Zn-Pb-(Ag) and Ag-Cu-Bi replacement orebodies in the eastern part of the deposit. These orebodies replaced carbonates and overprinted Fe-rich sphalerite and galena rims from the pyrrhotite pipes. The replacement bodies follow sub vertical faults trending N35° E, N120° E, and N170° E and locally favorable Pucará beds, mainly dolo-arenite layers.


Mining Methods

  • Truck & Shovel / Loader
  • Cut & Fill
  • Wood bracing and shoring
  • Cemented backfill
  • Hydraulic backfill


Summary:

Mineral stockpiles from Tajo Raúl Rojas
During 2019, stockpiles of marginal mineral from the exploitation of the Raúl Rojas pit and sulfide ore from the in situ oxide pit were treated.

Vinchos Mine
During 2019, no ore was produced from the Vinchos mine. This mine is in a process of temporary suspension of operations.

Paragsha underground mine
During 2019, the Paragsha mine continued with the temporary suspension. However, the infrastructure for the pumping system remains operational and in good condition.

Due to the characteristics of the terrain, conventional semi-mechanized mining techniques were employed, including wood bracing and shoring as well as cemented hydraulic backfill.

However, the underground mine is subject to ever-increasing deformation, which means that operations need to have greater operational safety. Therefore, mine operations are advancing more slowly and greater quantities of support features and materials are required. Also, higher cement ratios were used in the cemented hydraulic backfill mix, making it possible to access the nearby operational areas in a shorter time (twelve days) and recover higher percentages of ineral reserves.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

Sulphide Concentrators - Paragsha-San Expedito
During 2019, the crushing, grinding and filtering circuits at the Paragsha plant, the zinc circuit and the lead circuit at the San Expedito plant continued to be used.

The Paragsha-San Expedito plants operated continuously, treating marginal polymetallic mineral from the Raúl Rojas de Cerro de Pasco pit. Throughout the 2017 year, operational changes were made to increase production and improve the metallurgy of concentrates. In the crushing area, the classification of the marginal with high humidity was optimized, making it possible to continue operations. In the third quarter of the year, the construction of the sorting circuit was completed and the testing process for the treatment of the marginal began in 2018. This, together with the optimization projects for secondary / tertiary crushing, grinding and flotation, will mean an improvement of the quality of the grades, better recoveries and a greater volume of concentra ........

Recoveries & Grades:

CommodityParameter201920182017201620152014
Zinc Head Grade, % 1.891.941.882.013.92.7
Lead Head Grade, % 0.630.540.530.711.51.1
Silver Head Grade, oz/t 0.820.580.620.973.911.3
Gold Head Grade, oz/t 0.690.190.150.20.30.1

Production:

CommodityProductUnits201920182017201620152014
Zinc Metal in concentrate kt  ......  Subscription required  ......  Subscription required9.32.31213
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required2262729
Lead Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate M oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in doré M oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in doré oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,133 kt994 kt460 kt
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required1,133 kt1,142 kt1,010 kt
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 2.1 Mt Zinc 1.2 % 25 kt
Proven 2.1 Mt Lead 0.6 % 13 kt
Proven 2.1 Mt Silver 0.5 oz/t 1 M oz
Measured 2.1 Mt Zinc 1.2 % 25 kt
Measured 2.1 Mt Lead 0.6 % 13 kt
Measured 2.1 Mt Silver 0.5 oz/t 1 M oz
Inferred 154 Mt Zinc 2.1 % 3,234 kt
Inferred 154 Mt Lead 0.8 % 1,232 kt
Inferred 154 Mt Silver 2.5 oz/t 385 M oz
Total Resource 156.1 Mt Zinc 2.1 % 3,259 kt
Total Resource 156.1 Mt Lead 0.8 % 1,245 kt
Total Resource 156.1 Mt Silver 2.5 oz/t 386 M oz

Operating Costs:

Units201920182017
Combined mining costs ($/t milled) USD 9.35.65.3
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units201920182017
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Management Discussion & Analysis 2017
Annual Report 2016
Management Discussion & Analysis 2016
Annual Report 2015
Management Discussion & Analysis 2015
Other 2015
Annual Report 2014
Subscription required - Subscription is required.

News:

NewsDate
Cerro de Pasco Resources Provides Corporate and Transaction Update Français December 22, 2020
Cerro de Pasco Resources Extends Date for Landmark Acquisition of the Cerro de Pasco Mine September 1, 2020
Cerro de Pasco Resources: CDPR to Acquire Cerro de Pasco Operations in Peru November 28, 2019

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2020 MDO Data Online Inc.