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  3. Mineral Resource Data System (MRDS)

Cemsa

Producer in Cajamarca, Peru with commodities Copper, 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. Land status
  12. Ownership information
  13. Reserves and resources
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10158093
MAS/MILS ID 3330110002
Record type Site
Current site name Cemsa

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -79.0998, -6.89808 (WGS84)

Site location context

Political divisions (FIPS codes)

Cajamarca(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Cajamarca

Commodities

Commodity Importance
Copper Tertiary
Lead Tertiary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Enargite Unknown
Galena Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) -79.0998, -6.89808
ListMap

Economic information

Ore body information

  • Area 50HA
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OXIDATION
    Primary Ore Control FAULTING
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 SILICIFICATION
    Strike And Dip N90E:
    Total Surface Area (HA) 50
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant No
Discovery year 1771

Mining district

District name Hualgayoc Mining District

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Cia. Explotadora De Minas San Agustin
    Interest 100
    Home office Peru
    Year 1971

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Measured 500000mt ore
    Indicated 1000000mt ore
    Demonstrated 1500000mt ore
    Total resources 1500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.5 wt-pct Copper Trace 1975
    Lead Pb 5 wt-pct Lead Trace 1975
    Zinc Zn 10 wt-pct Zinc Trace 1975

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method TIMBERED STOPES
    Percent Waste Rock 20
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    Capacity 70
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1975

Reference information

Bibliographic references

  • Deposit

    PURSER, W. F., 1971, METAL-MINING IN PERU, PAST AND PRESENT:

  • Deposit

    PRAEGER, NEW YORK, 339 PGS.

General comments

Subject category Comment text
Deposit MILL TREATS ORE FROM MANY SMALL ONE MAN OPERATIONS IN AREA.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Ljb 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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