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Milpo

Plant in Pasco, Peru with commodities Lead, Silver, Zinc
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10279717
MRDS ID W029831
MAS/MILS ID 3330350015
Record type Site
Current site name Milpo
Alternate or previous names El Porvenir
Related records 10079729

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -76.11642, -10.59792 (WGS84)
Elevation 4200
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Pasco(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Pasco

Commodities

Commodity Importance
Lead Primary
Silver Primary
Zinc Critical Primary

Materials information

Materials Type of material
Calcite Unknown
Galena Unknown
Jamesonite Unknown
Pyrite Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) -76.11642, -10.59792
ListMap

Economic information

Ore body information

  • Strike N60E
    Dip 90N
    Thickness 1M
    Length 150M
    Width 400M
    Area 50HA
    Depth to top 50M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control IGNEOUS
    Strike And Dip N60E:90N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 50
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1940
Mining method Combined Methods
Year of first production 1949
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Atacocha District

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Minerals Only

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Compania Minera Milpo S. A.
    Interest 100
    Home office Peru
    Year 1989

Production statistics

  • Year 1991
    Description Contained Metal Output 5936 Mt
  • Year 1992
    Description Contained Metal Output 6017 Mt

Comments on the production information

  • MOST CONTAINED SILVER IS IN THE LEAD CONCENTRATE.

Reserves and resources

  • Type In-situ
    Estimate year 1994
    Demonstrated 5800000mt ore
    Total resources 5800000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 170 g/mt Silver Major 1994
    Lead Pb 3.6 wt-pct Lead Major 1994
    Zinc Zn 5.1 wt-pct Zinc Major 1994
  • Type In-situ
    Estimate year 1986
    Indicated 1313000mt ore
    Demonstrated 1313000mt ore
    Total resources 1313000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 121.3 g/mt Silver Major 1986
    Lead Pb 3.9 wt-pct Lead Major 1986
    Zinc Zn 5.8 wt-pct Zinc Major 1986
  • Type In-situ
    Estimate year 1986
    Inferred 5000000mt ore
    Total resources 5000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 102.5999 g/mt Silver Major 1986
    Lead Pb 3.3 wt-pct Lead Major 1986
    Zinc Zn 6 wt-pct Zinc Major 1986
  • Type In-situ
    Estimate year 1993
    Demonstrated 4400000mt ore
    Total resources 4400000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 3.7 wt-pct Lead Major 1993
    Zinc Zn 5.9 wt-pct Zinc Major 1993

Comments on the reserve resource information

  • PRODUCTION OF 679,647 MT ORE IN 1989 YIELDING 31,944 MT PB CONC AT 69.4% PB AND 74.8 OZ AG PLUS 49582 MT ZN CONT AT 56.6% ZN AND 4.6 OZ AG. NET INVESTMENT OF $1.9 MILLION IN 1989 FOR A TOTAL OF $74.1 MILLION SINCE 1972. MILPO HAD FINE SILVER PRODUCTION OF 1,864,998 OZ IN 1988.
  • DATA FROM PAH REPORT.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method COMBINED METHODS
    Percent Recovery 90
    Capacity 2200
    Capacity Units MT ORE/DAY
    Year of Information 1989

Reference information

Bibliographic references

  • Production

    *CRU MONITOR, LEAD, JULY 1992, P. 8.

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUNE 1993,

  • Reserve-Resource

    P. 31, 39, 49.

  • Deposit

    PURSER, W.F.C., 1971, METAL-MINING IN PERU, P

  • Deposit

    PRESENT: PRAEGER PUB., NEW YORK, 339 P.

  • Deposit

    ANDEAN TIMES,1974, PERU MINING SURVEY: PER. TIMES, VOL. 34,

  • Deposit

    1764, 89 PGS.

  • Deposit

    JOHNSON, R., LEWIS, R., ABELE, G., 1955, GEOLOGY AND ORE DEP

  • Deposit

    OF THE ATACOCHA DIST., DEPTO. DE PASCO, PERU: USGS BULL. 975

  • Deposit

    337E-388E.

  • Deposit

    ENGINEERING MINING JR., 1975, WORLD ROUNDUP: MCGRAW HILL, NE

  • Deposit

    JAN., 75, P. 80.

General comments

Subject category Comment text
Deposit JULY 10, 1975: BY LAW THE EMPLOYEES OF A MINING OPERATION OW PER CENT OF IT. THE UNDERGROUND METHOD DESCRIBED IS THE CURRENTLY OPERATING THE BENEFICIATION METHOD DESCRIBED IS FOR THE EXPANSION OF T TATION CELLS AND UNDERGROUND CRUSHING FACILITIES. EMJ, 1975, SAYS PLANNED EXPANSION FROM 1000 TO 1800 TO POSSI 2700 TPD CONSIDERED AT COST OF 5.4 MILLION.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-AUG-94 Difrancesco, Carl A. U.S. Bureau of Mines

Beyond USGS

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

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