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La Florida Lead-Zinc Mine 9

Producer in La Libertad, Peru with commodities Lead, Zinc, Silver, 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. Economic information about the deposit and operations
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10068960
MRDS ID W002238
Record type Site
Current site name La Florida Lead-Zinc Mine 9
Alternate or previous names Mina La Florida, Veins: Huamachuco, Alfa
Related records 10026722

Geographic coordinates

Geographic coordinates: -78.04977, -7.88137 (WGS84)
Elevation 4000
Relative position ABOUT 7 KM SOUTH OF HUAMACHUCO.

Site location context

Political divisions (FIPS codes)

La Libertad(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru La Libertad

Comments on the location information

  • NO. 9 ON METALLOGENIC MAPS OF PERU, 1969. LA FLORIDA MINE IS ON CERRO HUAYLILLAS.

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary
Silver Primary
Gold Primary

Materials information

Materials Type of material
Boulangerite Ore
Bournonite Ore
Chalcopyrite Ore
Galena Ore
Jamesonite Ore
Marcasite Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue

Alteration

  • (Local) Silicification Of Shale; Sericite, Chlorite, Pyrite Alteration Of Porphyry Where Cut By Veins.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Carhuaz Formation;
    Rock description Carhuaz Formation;

Nearby scientific data

(1) -78.04977, -7.88137
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Shale Beds Are Moderately Folded, Striking About Nw. They Are Intruded By A Stock And Various Dikes Of Porphyritic Rock Ranging In Composition From Hornblende Diorite To Biotite Quartz Diorite. At Contacts With The Intrusive Rock The Shale Is Contorted And Fractured.

Ore body information

  • Strike N35-50W
    Dip 50SW
    Length 400M
    Width 5M
    Depth to bottom 300M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Year of first production 1950
Production years DATA AVAILABLE FOR 1950-55 ONLY

Ownership information

  • Type Owner-Operator
    Owner Empresa Explotadora Huamachuco, S. A., Formed 1949

Production statistics

  • Year 1950
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^2.9% Pb, 3.25% Zn, 214.93 G/Mt Ag, 0.68 G/Mt Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Lead Lead 3wt-pct
    Ore Gold Gold 1g/mt
    Major Ore Zinc Zinc 3wt-pct
    Major Ore Silver Silver 215g/mt
  • Year 1951
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^3.78% Pb, 4.51% Zn, 230 G/Mt Ag, 0.44 G/Mt Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 230g/mt
    Major Ore Zinc Zinc 5wt-pct
    Major Ore Lead Lead 4wt-pct
    Ore Gold Gold 0g/mt

Comments on the production information

  • IN 1951, CONCENTRATE RECOVERY 84.9% PB AND 83.1% ZN.

Reserves and resources

  • Type In-situ
    Estimate year 1951
    Total resources 83232000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.13 wt-pct Lead Major 1951
    Zinc Zn 5.32 wt-pct Zinc Major 1951
    Silver Ag 28.21 g/mt Silver Major 1951
    Gold Au 0.3 g/mt Gold Major 1951

Comments on the reserve resource information

  • ORE (1) PROVEN; ORE (2) PROBABLE.

Comments on the workings information

  • SEE RECORD NUMBER LLB0202.

Reference information

Bibliographic references

  • Deposit

    SIMONS, FRANK, 1960, UNPUBLISHED REPORT, P. 1268

  • Deposit

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

  • Deposit

    MALAGA SANTOLALLA, FERMIN, 1907, MONOGRAFIA MINERA DE LA PROVINCIA DE HUAMACHUCO: CUERPO DE ING. DE MINAS DEL PERU BOL. NO. 51, P. 40-45

  • Deposit

    BRAMBILLA, DANTE, 1954, INFORME GEOLOGICO DE LA MINA LA FLORIDA: SOC. NAC. DE MINERIA Y PETROLEO BOL., NO. 35, P. 39-57.

  • Deposit

    1960 COMPILE FRANK SIMONS, UNPUB. REP

  • Production

    F. SIMONS (1960); BRAMBILLA (1954).

General comments

Subject category Comment text
Deposit SHOOTS WITH MAX. THICKNESS 30 M. THE TWO PRINCIPAL VEINS, HUAMACHUCO AND ALFA, ARE PARALLEL. THE ONLY NON-METALLIC GANGUE MINERAL IS QUARTZ WHICH COMMONLY SHOWS COMB STRUCTURE. VEINS ARE BANDED AND VUGGY AND ARE CHARACTERIZED BY CURVING WALLS AND NUMEROUS SPLITS, ESPECIALLY WHERE VEIN WALLS ARE SHALE. VEIN STRUCTURES ARE STRONGEST WHERE ONE OR BOTH WALLS ARE DIORITE, & USUALLY DEGENERATE INTO A SERIES OF NARROW STRINGERS WHERE THEY ENTER SHALE, PARTICULARLY THE DARK BITUMINOUS SHALE. ORE BEING MINED IN 1951 AVERAGED 3-4% LEAD, 3-4% ZINC, 150-200GRAMS OF AG PER TON, & A FEW GRAMS OF AU PER TON.

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.

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