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Yauricocha

Producer in Lima, Peru with commodities Copper, Lead, Silver, Zinc, Gold
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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. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10068790
MRDS ID W002041
Record type Site
Current site name Yauricocha
Alternate or previous names Principal Ore Bodies: Antaca, Main Catas, Cuye, Pozo Rico, Eastern Contact, Virginia, Western Contact, T.C.O., Adriana, Mascotta, Giliana, Carmencita, Purisma Concepcion, West Catas.
Related records 10239422

Geographic coordinates

Geographic coordinates: -75.73304, -12.31452 (WGS84)
Elevation 4600
Relative position ABOUT 160 KM ESE OF LIMA, 97 KM DUE SOUTH OD LA OROYA.

Site location context

Political divisions (FIPS codes)

Lima(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Lima

Comments on the location information

  • YAURICOCHA REGION IS IN A U SHAPED VALLEY OF GLACIAL ORIGIN ORIENTED ENE LOCATION FROM METALLOGENIC MAP OF PERU 1969, NO. 56 LIMA

Commodities

Commodity Importance
Copper Primary
Lead Primary
Silver Primary
Zinc Critical Primary
Gold Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Enargite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Tennantite Ore
Barite Gangue
Calcite Gangue
Fluorite Gangue
Quartz Gangue
Siderite Gangue
Specularite Gangue

Alteration

  • (Local) Limestone Is Recrystallizied To Marble And Silicified; Igneous Rocks With Clay And Sericite.

Host and associated rocks

  • Host or associated Associated
    Rock type Unconsolidated Deposit > Silt
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Yauricocha And Exito Intrusives; Triada Member Of Casapalca Red Beds;Quishuanioc Limestone Member Of Casapalca Red-Beds;France Chert Member Of Casapalca Redbeds;Huamanripa Limestone;Goyllarisquizga Group
    Rock description Yauricocha And Exito Intrusives;Triada Member Of Casapalca Red Beds;Quishuanioc Limestone Member Of Casapalca Red-Beds;France Chert Member Of Casapalca Redbeds;Huamanripa Limestone;Goyllarisquizga Group
  • Host or associated Associated
    Rock type Sedimentary Rock > Chemical Sediment > Chert
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Machay Limestone
    Rock description Machay Limestone

Nearby scientific data

(1) -75.73304, -12.31452
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Yauricacha Ore Bodies Are Associated With A Granodiorite Intrusive Located On The Western Limb Of A Se Plunging Syncline Of Machay Limestone And Casapalca Red-Beds.
Type of structure Local
Structure description Chacras Shuffle Zone Which Is A Strong Fault And Fracture Zone That Projects Into The Mine Area

Ore body information

  • General form ELONGATE - IRREGULAR - LENTICULAR - ZONED

Controls for ore emplacement

  • Contact Of France Chert And Granodiorite

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1862
Discoverer Antonio Raimondi
Year of first production 1948

Mining district

District name Yauricocha

Ownership information

  • Type Owner-Operator
    Owner Cerro De Pasco Corp. ; Centromin
    First year 1948
    Last year 1973

Production statistics

  • Year 1964
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^4.29 % Cu, 1.98 % Pb, 4.70 % Zn, 135.5 G/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Zinc Zinc 5wt-pct
    Major Ore Lead Lead 2wt-pct
    Major Ore Copper Copper 4wt-pct
    Major Ore Silver Silver 136g/mt
  • Year 1965
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^3.28 % Cu, 117.7 G/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 118g/mt
    Major Ore Copper Copper 3wt-pct
  • Year 1966
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^Est. 5 % Cu, 75 G/Ton Ag, 3 G/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 3g/mt
    Major Ore Silver Silver 75g/mt
    Major Ore Copper Copper 5wt-pct
  • Year 1977
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^4.18 % Cu, 1.68 % Pb, 4.21 % Zn, 140.6 G/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 141g/mt
    Major Ore Lead Lead 2wt-pct
    Major Ore Copper Copper 4wt-pct

Comments on the production information

  • THE MINE PRODUCES BETWEEN 150,000 TO 300,000 TONS OF ORE ANNUALLY REPORTED IN MINING MAGAZINE SEPT. 1969, VOL. 121, NO. 3, P. 241 . THE ANUARIO MINERO COMERCIAL 1977 STATED ONLY CU, PB, ZN AND AG WITH NO GRADE FOR THE ORE. THE INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESSING OPERATIONS 1977 REPORTS: 1.4 % CU, 2.1 % PB, 4.2 % ZN, 153 G/TON AG (AVERAGE ORE GRADE. 1968 PB AND ZN CAME FROM ORE OF 2.13% PB, 4.89% ZN, 1.65% CU, AND 4.6 OZ/T AG. THE OTHER NUMBERS FOR AG GRADES SEEM HIGH (NJP); ZN CONCENTRATE RUNS 0.02 OZ/ST AU, PB CONCENTRATE RUNS 0.01-O.1 OZ/ST AU. ACTIVE DEVELOPED PRODUCER.

Reserves and resources

  • Type In-situ
    Estimate year 1977
    Total resources 3295000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.4 wt-pct Copper Major 1977
    Lead Pb 2.1 wt-pct Lead Major 1977
    Silver Ag 153 g/mt Silver Major 1977
    Zinc Zn 4.2 wt-pct Zinc Major 1977
  • Type In-situ
    Estimate year 1979
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.4 wt-pct Copper Major 1979
    Lead Pb 2.1 wt-pct Lead Major 1979
    Silver Ag 121.413 g/mt Silver Major 1979
    Zinc Zn 4.2 wt-pct Zinc Major 1979
  • Type In-situ
    Estimate year 1984
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.2 wt-pct Copper Major 1984
    Lead Pb 2.2 wt-pct Lead Major 1984
    Silver Ag 107.295 g/mt Silver Major 1984
    Zinc Zn 4.4 wt-pct Zinc Major 1984
  • Type In-situ
    Estimate year 1990
    Total resources 2897420000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.9 wt-pct Copper Major 1990
    Lead Pb 2.5 wt-pct Lead Major 1990
    Silver Ag 118.192 g/mt Silver Major 1990
    Zinc Zn 4.6 wt-pct Zinc Major 1990

Comments on the reserve resource information

  • 1644407 MET TONS PROVED + 289304 MET TONS PROBABLE RESERVES. PV = PROVED, PB = PROBABLE, PS = POSSIBLE

Workings at the site

  • Type of workings Underground
    Overall depth 300M

Comments on development

  • CONCENTRATOR FEED CAPACITY:800 TPD, PLANT OPERATING. ; ECON.COM: ORE HAULED TO CONCENTRATOR PLANT 8 KM AWAY AT CHUMPE.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit First Production Year: 1948 MAJOR PRODUCTION
Deposit THE PRINCIPAL ORE BODIES IN THE YAURICOCHA DEPOSIT ARE THE CATAS, MASCOTA, AND POZO RICO. THE CATAS CONSISTS OF PIPE-LIKE BODIES OF MASSIVE PYRITE WITH ENARGITE AND CHALCOPYRITE. THE POZO RICO PIPE IS ELONGATED ALONG THE CONTACT OF A LENTICULAR STOCK. THE MASCOTA PIPE CONSISTS OF TABULAR REPLACEMENTS, PIPES AND POCKETS. IN GENERAL, THE ORE BODIES ARE FOUND ALONG THE CONTACT WITH FRANCE CHERT, ADJOINING THE GRANODIORITE MASS, AND WITHIN THE MACHAY LIMESTONE. DISTRICT IS ZONED WITH AN EASTERN ENARGITE ZONE, INCLUDING ENARGITE VEINS AND GRANODIORITE INTRUSIONS, TO AN ENARGITE-CHALCOPYRITE-BORNITE ZONE, TO A SPHALERITE-GALENA ZONE, TO A SILVER ZONE. T.C.O. ARE TRANSPORTED COPPER OXIDES. CATAS ORE BODY RETAINS RELICT TEXTURES SUGGESTING REPLACEMENT OF A REEF FACIES IN THE LIMESTONE. PURISIMA CONCEPCION DEPOSIT MAY BE A SEDIMENT HOSTED GOLD DEPOSIT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1973 Goudarzi, Gus H. (Theune, C. T.) U.S. Geological Survey
Updater 01-JUN-1981 Ericksen, George E. U.S. Geological Survey
Updater 01-NOV-1993 Page, Norman J. U.S. Geological Survey
Updater 01-MAY-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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