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Chilete Zinc-Lead Deposit - 8

Past Producer in Cajamarca, Peru with commodities Zinc, Lead, Aluminum, 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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Ownership information
  17. Production statistics
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10068757
MRDS ID W002002
Record type Site
Current site name Chilete Zinc-Lead Deposit - 8
Alternate or previous names Chilete Mining District, Paredones, Veins: Murcielago, West Pacasmayo, Animas, Esperanza, Pilancones,, Pacasmayo, Hualgayos, H Group, North, Valenciana

Geographic coordinates

Geographic coordinates: -78.80812, -7.21474 (WGS84)
Elevation 1100
Relative position 108 KM E OF PACASMAYO; PAREDONES IS 4 KM OF CHILETE.

Site location context

Political divisions (FIPS codes)

Cajamarca(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Cajamarca

Comments on the location information

  • LOCATION FROM METALLOGENIC MAP OF PERU 1969 - NO. 8. NEAR THE TOWN OF CHILETE.

Commodities

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

Materials information

Materials Type of material
Bauxite Ore
Chalcopyrite Ore
Galena Ore
Marcasite Ore
Pyrite Ore
Sphalerite Ore
Ankerite Gangue
Barite Gangue
Dolomite Gangue
Gypsum Gangue
Quartz Gangue

Alteration

  • (Local) Plagioclase Feldspar To Sericite, Calcite, Epidote - Pyroxene Chloritized

Analytical data

Result SIMONS (1955) GIVES SPHALERITE ANALYSIES THAT RANGE FROM 1.26 TO 9.56 WEIGHT % FE, 0.23-0.50% CD. ZN/PB IN MURCIELAGO VEIN 2.31-4.38
Result ZN/PB IN PACASMAYO 1.83-9.44 (HIGHER AT DEPTH)
Result ZN/PB IN WEST PACASMAYO 1.59-4.32 (HIGHER AT DEPTH)
Result ZN/PB IN ESPERANZA 1.65-5.03.

Mineral occurrence model information

Model code 106
USGS model code 25b
Deposit model name Epithermal vein, Creede
Mark3 model number 58

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Goyllarisquiso Formation;
    Rock description Goyllarisquiso Formation;
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -78.80812, -7.21474
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults Of Small Displacement - Very Little Post Mineral Movement Along The Veins

Ore body information

  • Name MURCIELAGO VEIN
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 2.5M
    Length 1700M
    Width 4M
    Depth to top 0M
    Depth to bottom 245M
  • Name ESPERANZA
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 2.25M
    Length 150M
  • Name PILANCONES
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 2M
    Length 400M
  • Name WEST PACASMAYO
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 1.5M
    Length 260M
  • Name NORTH VEIN
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 3.5M
    Length 150M
  • Name PACASMAYO VEIN
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 1M
    Length 200M
  • Name ANIMAS VEIN
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Thickness 1.5M
    Length 80M
  • Name HUALGAYOC VEIN
    General form IRREGULAR
    Strike NW AND NE}ENE}WNW}NW}NW}ESE}NW}E
    Dip 65-85NE}STEEP NORTH AND SOUTH}65-80S}60-70SW}70SW}70S, 70-85N}65-80SW}50-75N
    Length 45M

Controls for ore emplacement

  • Within The Ore Shoots Of Marcielago Vein The Thicker Part Of The Vein Tend To Occur Where Strike Swings To The North.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1700
Year of first production 1952
Production years 1952-1968

Mining district

District name Chilete Mining District

Ownership information

  • Type Operator
    Owner Northern Peru Mining Corp., Subsidary Of American Smelting And Refining Co..
  • Type Owner
    Owner Northern Peru Mining And Smelting Co.
    First year 1924

Production statistics

  • Year 1956
    Period 1952 - 1956
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^3.8 % Pb, 10.4 % Zn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Zinc Zinc 10wt-pct
    Ore Lead Lead 4wt-pct

Comments on the production information

  • MONTHLY PRODUCTION WAS 700 TONS AND INCREASED TO 9000 TONS (1953). FOR PERIOD JAN. 1 TO AUG. 30, 1953, LEAD CONCENTRATES AVERAGED 60.36% PB, 7.90% ZN, 1.73% CU, 56.87 OZ/TON AG; ZN CONCENTRATES AVERAGE 52.73% ZN, 1.26% PB, 0.51% CU, AND 6.52 OZ/TON AG.

Comments on the reserve resource information

  • BASED ON PAST PRODUCTION AND GEOLOGY THE REPORTER ESTIMATES THAT AT LEAST ONE MIL TONS OF ORE MAY BE FOUND IN THE CHILETE DISTRICT.
  • BASED ON PAST PRODUCTION AND GEOLOGY THE REPORTER ESTIMATES THAT AT LEAST ONE MIL TONS OF ORE MAY BE FOUND IN THE DISTRICT
  • NO RESERVES

Comments on the workings information

  • USED SHRINKAGE STOPING. 5 LEVELS, 5 ADITS.

Comments on development

  • VEINS IN PAREDONES AREA DISCOVERED IN MIDDLE OF 17TH CENTURY, OXIDIZED MATERIAL WORKED BUT A SERIOUS CAVE-IN ON WEST PACASMAYO VEIN CAUSED THE MINES TO BE ABANDONED. REOPENED IN 1856 TO MINED SULFIDE ORES AND PRODUCTION CAME FROM MURCIELAGO AND WEST PACASMAYO VEIN. LEASED BY NORTHERN PERU MINING AND SMELTING CO. IN 1924 AND AFTER 4 YEARS OF EXPLORATION PURCHASED BY THEM. IN 1950'S HAD 250 TON/DAY FLOTATION MILL.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Discovery Year: 17TH CENTURY
Deposit First Production Year: 1952 SIGNIFICANT
Deposit VEINS ARE SCATTERED THROUGHOUT THE DISTRICT, BUT THE MAJOR PRODUCTION HAS BEEN FROM PAREDONES AREA CONSISTING OF MURCIELAGO, ESPERANZA, PILANCONES, PACAMAYO, ANIMA AND HUALGAYOC VEINS. VEINS FORMED BY FISSURE FILLING, BRECCIA FILLING, AND REPLACEMENT. VALENCIA VEIN IS SW EXTENSION (CONTINUATION) OF MURCIELAGO VEIN. MURCIELAGO VEIN HAS 3 ORE SHOOTS; 55, 90M AND 25 M LONG SEPARATED BY BARREN SECTIONS 10-15 M WIDE ON FIFTH LEVEL. ESPERANZA VEIN: KNOW ONLY UNDERGROUND; ON THIRD LEVEL SPLITS INTO TWO SEMI-PARALLEL VEINS. AVERAGE 1 M IN THICKNESS. PACASMAYO VEIN AVERAGES 1.5 M IN THICKNESS. HUALGAYOC VEIN KNOWN ONLY ON FIFTH LEVEL, AVERAGES 1 M THICKNESS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1973 Goudarzi, Gus H. U.S. Geological Survey
Updater 01-FEB-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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