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Morococha

Producer in Junin, Peru with commodities Copper, Zinc, Lead, Silver, Tungsten, Bismuth
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10079730
MRDS ID W029832
Record type Site
Current site name Morococha
Related records 10304400

Geographic coordinates

Geographic coordinates: -76.13305, -11.54788 (WGS84)
Elevation 4509
Relative position 110 KM ENE FROM LIMA

Site location context

Political divisions (FIPS codes)

Junin(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Junin

Comments on the location information

  • THERE IS ANOTHER MOROCOCHA MINE IN THE DEPARTAMENTO OF JUNIN, OWNER IS COMPANIA MINERA SANTA RITA AND PRODUCES PB, ZN, AG, CU (SEE INTERNAT. DIR. OF MINING AND MINERAL PROCES. OPERAT. 1977); 38 KM SW OF LA OROYA

Commodities

Commodity Importance
Copper Primary
Zinc Critical Primary
Lead Secondary
Silver Secondary
Tungsten Critical Tertiary
Bismuth Critical Tertiary

Materials information

Materials Type of material
Alabandite Ore
Arsenic Ore
Bornite Ore
Bournonite Ore
Chalcocite Ore
Chalcopyrite Ore
Copper Ore
Covellite Ore
Cubanite Ore
Enargite Ore
Famatinite Ore
Galena Ore
Greenockite Ore
Huebnerite Ore
Marcasite Ore
Molybdenite Ore
Proustite Ore
Pyrite Ore
Pyrrhotite Ore
Scheelite Ore
Sphalerite Ore
Stephanite Ore
Stromeyerite Ore
Wolframite Ore
Alunite Gangue
Anhydrite Gangue
Ankerite Gangue
Barite Gangue
Calcite Gangue
Chlorite Gangue
Fluorite Gangue
Gypsum Gangue
Hematite Gangue
Jarosite Gangue
Magnetite Gangue
Quartz Gangue
Rhodochrosite Gangue
Rhodonite Gangue
Sericite Gangue
Serpentine Gangue
Siderite Gangue
Talc Gangue

Alteration

  • (Local) Recrystallization And Dolomitization Of Limestone; Anhydrous Silicate Skarn And Hornfels Development, Hydrated Silicate Alteration Composed Of Serpentine, Talc, And Chlorite; Anhydrite-Gypsum Replacing Limestones And Associated Collapse Breccias.

Analytical data

Result CU 1.1 %, ZN 2.0 %, PB 0.6 %, AG 110 G PER TON

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name Catalina Volcanics;San Francisco , Potosi, And Gertrudis Stocks
    Rock description Catalina Volcanics;San Francisco , Potosi, And Gertrudis Stocks
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Excelsior Group;Casapalca Formation;Goyllarisquisga Formation (Santa Toribo Formation);Purcara Group (Potosi Formation)
    Rock description Excelsior Group;Casapalca Formation;Goyllarisquisga Formation (Santa Toribo Formation);Purcara Group (Potosi Formation)

Nearby scientific data

(1) -76.13305, -11.54788
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Northwest Plunging Anticline, Anticona Intrusive, Gertrudis Intrusive, San Francisco Intrusive, Potosi Intrusive, Veins

Ore body information

  • Name SAN FRANCISCO VEIN 4 - LA PAZ 146
    General form TABULAR
    Strike }E-W}}}N60E}}E-W}}}}}}}}}
    Dip }70N}}}65N}}}}}}}}}}}
    Thickness 3.5M
    Length 1800M
    Width 400M
  • Name CECILIA VEIN
    General form TABULAR
    Strike }E-W}}}N60E}}E-W}}}}}}}}}
    Dip }70N}}}65N}}}}}}}}}}}
    Thickness 3.5M
    Length 975M
    Width 200M
  • Name MANUELITA VEIN
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
    Thickness 3.5M
    Length 975M
    Width 390M
  • Name CORBRIZA VEIN 9
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
    Thickness 3.5M
    Length 610M
    Width 150M
  • Name RECTIFICADORA 56 VEIN
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
    Thickness 37.5M
    Length 530M
  • Name LA JOVEN 26 VEIN
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
    Length 725M
  • Name SAN FRANCISCO VEIN 76
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
    Length 800M
  • Name YANKEE VEIN 2
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name OMBLA MANTO
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name DANTE MANTO
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name CHURRUCA-RECUPERADA MANTOS
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name TORO MOCHO CONTACT PIPES
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name AMISTAD PIPE
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name YANTUE VEIN 2 AND PIPE
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name RIQUEZA 100 ORE BODY
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}
  • Name SAN MIGUEL MANTO
    General form TABULAR
    Dip }70N}}}65N}}}}}}}}}}}

Controls for ore emplacement

  • E-Sector Mainly Veins, W-Sector Mainly Pipes And Stratabound. District Regionally Zoned.

Comments on the geologic information

  • A DETAILED DESCRIPTION OF THIS AREA IS GIVEN IN RIDGE, 1972.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Mining district

District name Morococha Mining District

Ownership information

  • Type Owner-Operator
    Owner Cerro De Pasco Corp. ; Empresa Minera Del Centro Del Peru (Centromin)
    First year 1974
    Last year 1973

Production statistics

  • Year 1972
    Material W
    Accuracy Accurate
    Description Ap_Grade: ^1.97 % Cu, 0.52 % Pb, 1.64 % Zn, 147.7 G Per Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Zinc Zinc 2wt-pct
    Lead Lead 1wt-pct
    Major Copper Copper 2wt-pct
    Silver Silver 148g/mt

Comments on the production information

  • THE ANUARIO MINERO COMERCIAL 1977 STATED ONLY CU, PB, ZN AND AG WITHOUT ANY GRADE FOR THE ORE. THE INTERNAT. DIR. OF MINING AND MINERAL PROCES. OPERAT. 1977 REPORTS: 1.1 % CU, 2.0 % ZN, 0.6 % PB AND 110 G PER TON AG (AVERAGE ORE GRADE). FEED GRADE 1990: 0.46% CU, 0.95% PB, 3.13% ZN, 140.97 G/MT AG

Reserves and resources

  • Type In-situ
    Estimate year 1967
    Total resources 2772000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.1 wt-pct Copper Major 1967
    Zinc Zn 2 wt-pct Zinc Major 1967
    Lead Pb 0.6 wt-pct Lead Minor 1967
    Silver Ag 110 g/mt Silver Minor 1967
  • Type In-situ
    Estimate year 1967
    Total resources 198000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.58 wt-pct Copper Major 1967
    Zinc Zn 0.44 wt-pct Zinc Major 1967
    Lead Pb 0.11 wt-pct Lead Minor 1967
    Silver Ag 144.2 g/mt Silver Minor 1967
  • Type In-situ
    Estimate year 1979
    Total resources 3439000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.58 wt-pct Copper Major 1979
    Zinc Zn 5.06 wt-pct Zinc Major 1979
    Lead Pb 1.42 wt-pct Lead Minor 1979
    Silver Ag 153.5 g/mt Silver Minor 1979
  • Type In-situ
    Estimate year 1983
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.1 wt-pct Copper Major 1983
    Zinc Zn 2 wt-pct Zinc Major 1983
    Lead Pb 0.6 wt-pct Lead Minor 1983
    Silver Ag 96 g/mt Silver Minor 1983
  • Type In-situ
    Estimate year 1983
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.9 wt-pct Copper Major 1983
    Zinc Zn 1.7 wt-pct Zinc Major 1983
    Lead Pb 0.7 wt-pct Lead Minor 1983
    Silver Ag 115.766 g/mt Silver Minor 1983
  • Type In-situ
    Estimate year 1983
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.9 wt-pct Copper Major 1983
    Zinc Zn 1.7 wt-pct Zinc Major 1983
    Lead Pb 0.7 wt-pct Lead Minor 1983
    Silver Ag 115.766 g/mt Silver Minor 1983
  • Type In-situ
    Estimate year 1990
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.9 wt-pct Copper Major 1990
    Zinc Zn 1.7 wt-pct Zinc Major 1990
    Lead Pb 0.7 wt-pct Lead Minor 1990
    Silver Ag 115.766 g/mt Silver Minor 1990

Comments on the reserve resource information

  • H1) 1,545,690 MET TONS PROVED + 731,570 MET TONS PROBABLE RESERVES. H2,3) DEADLINE 1.1.1967, DOES NOT INCLUDE POTENTIAL OPEN PIT ORE.

Comments on the workings information

  • MINED BY CUT AND FILL, CUT AND REDUCTION, FROM STOPING

Comments on development

  • ECON.COM: CAPACITY (1976): 1,450 MET TPD ORE; 1989 SHINING PATH DESTROYED COMPRESSED AIR PLANT AND SURFACE OPERATIONS, IN 1990 OPERATED AT 63% CAPACITY

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THICKNESS RANGES FROM 0.1 TO 1.5 M FOR VEINS THAT ARE MINED. ORE BODY 1: VEINS ARE IN OBLIQUE, STEEPLY DIPPING FRACTURE SYSTEMS, NEAR SURFACE ARE MINEABLE FOR MOST IF THEIR LENGTH AT DEPTH BOTTOM IS DOWNWARD PROTUBERANCES IN ORE SHOOTS. ORE MINERALS MOSTLY IN OPEN-SPACE FILLINGS. ORE BODY 9: MANTO IS ZONED HORIZONTALLY WITH PYRITE CORE, CHALCOPYRITE CLOSEST TO CORE, AND SPHALERITE AND GALENA AT MARGINS. ORE BODY 12: RICH ENARGITE-TETRAHEDRITE MATERIAL MINED TO 750 LEVEL.
Deposit NEAR BY IS ADISSEMINATED PORPHYRY DEPOSIT (594 MILLION METRIC TONS OF 0.68% CU WITH CUTOFF OF 0.5% CU) CALLED TOROMACHO. POSSIBLY STUDIES CONDUCTED BUT DEVELOPMENT SUSPENDED IN MID 1980'S. SEE RECORD NUMBER JUN0063.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Theune, C.T. U.S. Geological Survey
Updater 01-JAN-1988 Orris, Greta J. U.S. Geological Survey
Updater 01-JUL-1994 Page, Norman J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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