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Janchiscocha Molybdenum 34

Past Producer in Junin, Peru with commodity Molybdenum
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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. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10068934
MRDS ID W002211
Record type Site
Current site name Janchiscocha Molybdenum 34

Geographic coordinates

Geographic coordinates: -75.35803, -11.63121 (WGS84)
Elevation 4600
Relative position THE JANCHISCOCHA REGION IS 20-25KM NE OF JAUJA IN THE PROVINCIA DE JAUJA.

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

  • NO. 34 ON METALLOGENIC MAPS OF PERU, 1969

Commodities

Commodity Importance
Molybdenum Primary

Comments on the commodity information

  • GANGUE MINERALS ARE QUARTZ, PYRITE

Materials information

Materials Type of material
Molybdenite Ore
Pyrite Gangue

Alteration

  • (Local) Wall Rock Is Slightly Silicified And Sericticized

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Excelsior Formation, Shale & Quartzite;Mitu Formation, Sandstone & Conglomerate;Pucara Group, Limestone
    Rock description Excelsior Formation, Shale & Quartzite;Mitu Formation, Sandstone & Conglomerate;Pucara Group, Limestone

Nearby scientific data

(1) -75.35803, -11.63121
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description See Comments

Ore body information

  • Strike IRREGULAR
    Dip 25
    Length 350M
    Width 0.4M
    Depth to bottom 300M

Controls for ore emplacement

  • See Comments

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1915

Ownership information

  • Type Operator
    Owner Peru Molibdino

Comments on the reserve resource information

  • SIMONS 1960, P. 1562 REPORTS THAT DEPOSIT WAS INACTIVE AND THAT THE DEPOSIT IS MINED OUT OR TOO LOW GRADE TO MINE. INSUFFICIENT DATA 3/74 TO MAKE ESTIMATE. METALLOGENIC MAPS OF PERU INDICATE A SMALL DEPOSIT OF LITTLE OR NO ECONOMIC SIGNIFICANCE.

Reference information

Bibliographic references

  • Deposit

    SIMONS, FRANK, 1960, UNPUBLISHED REPORT, P. 1557

  • Deposit

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

  • Deposit

    DUENAS, ENRIQUE, 1906, RECURSOS MINERALES DE LAS PROVINCIAS DE JAUJA Y HUANCAYO: CUERPO DE ING. DE MINAS DEL. PERU BOL., NO. 35, P. 95

  • Deposit

    FORT, MICHEL, 1926, LA INDUSTRIA MINERA DEL PERU EN EL ANO DEL CENTENARIO 1921: BOL. MINAS, IND. Y CONSTR., SER. 2, V. 15, P. 1-84

  • Deposit

    5) HARRISON, JOHN V., 1943, THE GEOLOGY OF THE CENTRAL ANDES IN PART OF THE PROVINCE OF JUNIN, PERU: SOC. GEOL. PERU BOL., V. 16, P. 55-97

  • Deposit

    6) LISSON, CARLOS I., 1896, LA CRETA DE CABO BLANCO Y LA MOLYBDENITE DE CASCAS: BOL. MINAS, IND. Y CONSTR., V. 12, P. 61-62

  • Deposit

    1960 COMPILE FRANK SIMONS, UNPUB. REP

  • Production

    F. SIMONS, 1960, UNPUB. REP.

  • Reserve-Resource

    METALLOGENIC MAPS OF PERU. 1969, 1972

General comments

Subject category Comment text
Deposit Discovery Year: WORKED SMALL SCALE DURING WW I.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1973 Shaffer, Glenn L. U.S. Geological Survey

Beyond USGS

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

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