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Peru
Morococha Mine

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 Location:
112 km NEE from Lima, Peru

  Regional Office:
Ave. La Floresta 497 Of. 101 Charcarilla del Estanque, San Borja Lima 41
Lima
Peru
15037
Phone  ...  Subscription required
Fax51-1-618-9729
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Silver
  • Zinc
  • Lead
  • Copper
  • Gold
Mining Method
  • Mechanized Cut & Fill
  • Overhand Cut & Fill
  • Longhole open stoping
  • Hydraulic backfill
Production Start...
Mine Life7.3 years (as of Jan 1, 2014)
Morococha was placed on care and maintenance in February 2022.

Under an agreement with Aluminum Corporation of China (“Chinalco”) dating back to 2010, Pan American was required to eventually relocate the core Morococha facilities, including the processing plant, to enable the expansion of Chinalco’s copper mine. Company evaluates strategic alternatives for the future of the operation.


Owners

Source: p. 75
CompanyInterestOwnership
Pan American Silver Corp. 92.3 % Indirect
Compania Minera Argentum S.A. (operator) 100 % Direct
Ownership Tree
Morococha is owned and operated by Compañia Minera Argentum S.A., a Peruvian company in which Pan American, through its subsidiary Pan American Silver (Peru) S.A.C., has a 92.01% voting interest. In addition, Pan American holds the majority of the non-voting investment shares resulting in a total ownership interest of approximately 92.3%. The remaining interest is held by Alejandro Gubbins and Compañia Minera Casapalca S.A.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Manto
  • Mesothermal
  • Skarn


Summary:

Morococha is located in the Western Cordillera of the Andes. The host rocks for the mineralization in the Morococha district comprise schists, volcanic rocks, and predominantly carbonate sediments cut by a series of intrusions. The structures that account for the majority of the vein mineralization in the Morococha district trend predominantly northeast to east-northeast.

The structural setting of the area is dominated by shallowly northwest plunging folds, the most important of which is a north-northwest trending anticlinal feature referred to as the Yauli Dome. Compression gave rise to early northwest trending shears, and the uplifting effect of the intrusion of quartz monzonite stocks produced an arching of the Yauli Dome and an associated phase of tension faulting generally trending perpendicular to the axis of the anticline. This latter set is the most heavily mineralized set of fractures and accounts for the majority of fault hosted mineralization in the Morococha District.

Vein mineralization forms along the dominant system of northeast trending tensional faults.

Replacement manto mineralization generally occurs in carbonate horizons intersected by mineralized veins or proximal to pre-mineral intrusives, and some occurs as structurally controlled irregular chimneys. Mantos can have a significant strike extent where the veins are closely spaced, and can range from less than one metre to up to 12 metres in width.

Mineralization ........


Mining Methods

  • Mechanized Cut & Fill
  • Overhand Cut & Fill
  • Longhole open stoping
  • Hydraulic backfill


Summary:

Underground mining operations at Morococha consist primarily of long hole open stoping, and some conventional and mechanized overhand cut and fill. Classified tailings pumped hydraulically to stopes and waste rock are used for backfill where needed. Drilling is undertaken with hand held drills or electric hydraulic jumbo drills and the broken ore is removed using scoop trams. Mining of the wider veins and ore bodies has been mechanized with the aim of improving efficiency and operating costs. This mechanization is continuing on the narrower veins.

In the Manuelita and Sulfurosa areas of the mine, locomotives transport the ore in rail cars from the chutes to the shafts for hoisting. Other locomotives then transport the ore in rail cars to an adit where trucks then haul the ore to the stockpiles at the mill. In the Codiciada and Alapampa areas of the mine, ore is transported to underground stockpiles using scoop trams and then loaded onto haul trucks for transportation to surface via a haulage ramp.

The Manuelita (also known as Yauli) shaft has been deepened, and a new loading system is now available for production hoisting from a new mine level 70 metres below the Kingsmill tunnel. The Manuelita shaft is equipped with two 2.6 tonne skips which feed into chutes at an underground adit level from where material is transported in rail cars by a small locomotive to an adjacent surface truck loading facility. Ore is then trucked to the processing plant. The dee ........


Crushing and Grinding
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Processing

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Summary:

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Production:
Morococha was placed on care and maintenance in February 2022.

CommodityUnits2022202120202019201820172016
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required3,1212,8542,753
Zinc kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.
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Operational Metrics:

Metrics202220212020201920182017
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required743.4 kt728 kt733.4 kt
Daily milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required2,000 t
Annual milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required803,000 t803,000 t
Daily milling rate  ......  Subscription required  ......  Subscription required  ......  Subscription required2,000 t
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Reserves at June 30, 2022:
Mineral reserve and resources are estimated using a price of $19 per ounce of silver, $2,600 per tonne of zinc, $2,000 per tonne of lead and $7,000 per tonne of copper.

CategoryTonnage CommodityGradeContained Metal
Proven 3.6 Mt Silver 156 g/t 18 M oz
Proven 3.6 Mt Zinc 3.95 %
Proven 3.6 Mt Lead 1.31 %
Proven 3.6 Mt Copper 0.44 %
Probable 3.6 Mt Silver 158 g/t 18 M oz
Probable 3.6 Mt Zinc 3.78 %
Probable 3.6 Mt Lead 1.43 %
Probable 3.6 Mt Copper 0.32 %
Measured 0.65 Mt Silver 130 g/t 2.9 M oz
Measured 0.65 Mt Zinc 2.59 %
Measured 0.65 Mt Lead 0.79 %
Measured 0.65 Mt Copper 0.64 %
Indicated 0.8 Mt Silver 124 g/t 3.3 M oz
Indicated 0.8 Mt Zinc 2.37 %
Indicated 0.8 Mt Lead 0.74 %
Indicated 0.8 Mt Copper 0.61 %
Inferred 5.6 Mt Silver 143 g/t 26 M oz
Inferred 5.6 Mt Zinc 3.74 %
Inferred 5.6 Mt Lead 1.28 %
Inferred 5.6 Mt Copper 0.35 %

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs (sold) Silver USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† -4.34 / oz†   -5.34 / oz†  
All-in sustaining costs (sold) Silver USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1.52 / oz†   1.22 / oz†  
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 10.4   9.3   8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 117.5   120.2   92.9  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 34  
Pre-tax Income M USD 33.2   86.5   21.5  
After-tax Income M USD 21.1   69.8   17.1  
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Heavy Mobile Equipment as of June 30, 2014:
HME TypeSizeQuantity
Bolter ....................... Subscription required
Drill (long hole) ....................... Subscription required
Drill jumbo (single boom) ....................... Subscription required
Scissor Lift ....................... Subscription required
Scoop Tram 0.7 cu. yd ....................... Subscription required
Scoop Tram 2.2 cu. yd ....................... Subscription required
Scoop Tram 4 cu. yd ....................... Subscription required
Scoop Tram 6 cu. yd ....................... Subscription required
Truck (dump) 16 t ....................... Subscription required
Truck (haul) 25 t ....................... Subscription required
Truck (haul) 40 t ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 12, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Annual Information Form 2022
Annual Report 2022
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Press Release 2018
Year-end Mineral Reserves 2018
Annual Information Form 2017
Annual Report 2017
Annual Information Form 2016
Financial Review 2016
Management Discussion & Analysis 2016
Year-end Mineral Reserves 2016
Management Discussion & Analysis 2015
Form 40-F 2014
Technical Report 2014
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