1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

La Africana

Past Producer in Chile with commodity 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. 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. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10279392
MAS/MILS ID 3370410002
Record type Site
Current site name La Africana

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -70.94952, -33.44747 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Hematite Unknown
Magnetite Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -70.94952, -33.44747
ListMap

Economic information

Ore body information

  • Strike N10W
    Dip 78W
    Thickness 10M
    Length 1000M
    Width 300M
    Area 15HA
    Depth to top 35M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OXIDATION
    Primary Ore Control FAULTING
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 PROPYLITIC
    Type of Wallrock Alter. #2 PYRITIZATION
    Type of Wallrock Alter. #3 SILICIFICATION
    Strike And Dip N10W:78W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 35
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 15
    Date of Last Modification 780615

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1957

Mining district

District name Santiago

Mineral rights holdings

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

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Sociedad Minera Pudahuel Ltda. C. P. A.
    Interest 100
    Home office Chile
    Year 1975

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Measured 300000mt ore
    Demonstrated 300000mt ore
    Total resources 300000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.7 wt-pct Copper Major 1975
  • Type In-situ
    Estimate year 1975
    Measured 1000000mt ore
    Indicated 600000mt ore
    Demonstrated 1600000mt ore
    Total resources 1600000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.5 wt-pct Copper Major 1975

Workings at the site

  • Type of workings Underground
    Length 10000M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method OVERHAND SHRINKAGE 10-67
    Percent Waste Rock 15
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Length of Inclines (m) 0
    Slope of Inclines 0
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    Capacity 500
    Capacity Units MT ORE/DAY
    Unit Production Cost 10
    Units of Production $/MT ORE
    Operating Days per Year 310
    Operating Shifts per Day 2
    Year of Information 1976

Reference information

Bibliographic references

  • Deposit

    LLER FREEMAN PUBLICATIONS,E CHILENO: CODELCO PUBS., SANTIAGO

  • Deposit

    P. 415-419.

  • Deposit

    1975 E/MJ INT.DIRECTORY,

General comments

Subject category Comment text
Deposit LA AFRICANA MILL TREATS LO AGUIRRE ORE WITH TOTAL CAPACITY O TPHR., LOCATION IS 20 KM W. OF SANTIAGO, RESERVES COL. 4 ROW 2 PAGE A-10 ARE NOT YET EXPLOITED(NO. SECTION OF DEPOSIT). LOCATION & RESERVE GR.&TON. FROM SUTULOV(700).EMJ SAYS GR.1 PROD.< 1000 TONS,EMPLOYS 380. (702).

Reporter information

Type Date Name Affiliation Comment
Reporter 07-JUN-91 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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