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Los Incas Gold 50

Past Producer in Ayacucho, Peru with commodities Gold, Silver, Copper
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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. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Reserves and resources
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10068885
MRDS ID W002157
Record type Site
Current site name Los Incas Gold 50
Alternate or previous names Huayna Capac Concession

Geographic coordinates

Geographic coordinates: -74.68107, -14.96082 (WGS84)
Elevation 1500
Relative position 20 KM. DUE EAST OF HACIENDA LAS TRANCAS AND 30 KM ESE OF NAZCA.

Site location context

Political divisions (FIPS codes)

Ayacucho(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Ayacucho

Comments on the location information

  • NO. 50 ON METALLOGENIC MAPS OF PERU, 1969. ON CERROS TOCLLA AND SAN FERNANDO.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Chrysocolla Ore
Gold Ore
Malachite Ore
Pyrite Ore
Hematite Gangue
Limonite Gangue
Pyrolusite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result 26 SAMPLES VARY BETWEEN A TRACE AND 1.68 OZ/TON AU.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Coastal Batholith
    Rock description Coastal Batholith
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Early Cretaceous
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Early Cretaceous
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Yura Group
    Rock description Yura Group
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -74.68107, -14.96082
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fracture And Fault 22w And 53-60e.

Ore body information

  • General form PLANAR
    Strike N22W
    Dip 53-60E
    Thickness 2M
    Length 70M
    Width 10M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1944

Mining district

District name Nazca-Ocona

Ownership information

  • Type Operator
    Owner Concorcio Minero Del Peru
  • Type Owner
    Owner Banco Minero Del Peru
    First year 1981

Production statistics

  • Year 1946
    Period 1944 - 1946
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^7 - 8 G Au/T
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 8g/mt
  • Year 1946
    Period 1944 - 1946
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^7 - 8 G Au/T, 1 % Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 1wt-pct
    Major Ore Gold Gold 8g/mt

Comments on the production information

  • ORE AMOUNT BASED ON GOLD CONTENT OF 8 G/TON AU

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Total resources 7850000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 14.929 g/mt Gold Major 1981

Comments on the reserve resource information

  • ORE RESERVE IS PROBABLE.

Workings at the site

  • Type of workings Underground
    Area 0.4HA
    Length 200M
    Width 20M
    Overall depth 200M

Comments on the workings information

  • 4 LEVELS WITH STOPES, RAISES, CROSS-CUTS.

Comments on development

  • CUT AND FILL MINING.

Reference information

Bibliographic references

  • Deposit

    SIMONS, FRANK, 1960, UNPUBLISHED REPORT, P. 382

  • Deposit

    PERU-MAPA METALOGENETICO, 1969, AND, GUIA PARA EL MAPA METALOGENETICO DEL PERU, SOCIEDAD NACIONAL DE MINERIA Y PETROLEO, LIMA, PERU, NOV. 1969

  • Deposit

    CASTILLO J., R., 1981, MINA "LOS INCAS": BANCO MINERO DEL PERU, COD. B6224.

  • Deposit

    1960 COMPILE FRANK SIMONS, UNPUB. REP

  • Production

    F. SIMONS (1960); CASTILLO J. (1981).

  • Reserve-Resource

    CASTILLO J. (1981).

General comments

Subject category Comment text
Deposit THE VEIN WAS TRACEABLE ALONG THE OUTCROP FOR ABOUT 70 M. GOLD CONTENT WAS 7-8 GRAMS GOLD PER TON WITH SOME ORE CONTAINING AS MUCH AS 15-25 GRAMS. COPPER CONTENT WAS ABOUT 1% OR LESS. A COPPER CONCENTRATE CONTAINING 25% COPPER AND 650 GRAMS OF GOLD PER TON, AS GOLD BULLION OF ABOUT 700 FINENESS, WERE PRODUCED.
Deposit SEE RECORD NUMBER AYA0080.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1973 Shaffer, Glenn L. 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.

Maps centered on this site