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Colquiri

Plant in La Paz, Bolivia with commodities Silver, Tin, 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. Reporter information

Geologic information

Identification information

Deposit ID 10255577
MAS/MILS ID 3350200082
Record type Site
Current site name Colquiri

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -67.14838, -17.39657 (WGS84)
Elevation 4200
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

La Paz(province)

Bolivia(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Bolivia La Paz

Commodities

Commodity Importance
Silver Tertiary
Tin Critical Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Cassiterite Unknown
Chalcopyrite Unknown
Fluorite Unknown
Sphalerite Unknown
Stannite Unknown

Nearby scientific data

Ore Body (1) -67.14838, -17.39657
ListMap

Economic information

Ore body information

  • Strike N33E
    Dip 65N
    Thickness 10M
    Length 1500M
    Width 500M
    Area 8HA
    Depth to top 0M
    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
    Primary Ore Control FAULTING
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 INTERM ARGILLIC
    Strike And Dip N33E:65N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 8
    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 1500
Mining method Filled Stopes - Horiz Cut and Fill W/Tailings
Year of first production 1939
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name Colquiri

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 Bolivian Government Corp. Minera De Bolivia
    Interest 100
    Home office Bolivia
    Year 1993

Production statistics

  • Year 1969
    Period 1968-1969
    Description 270000 Mt/Yr 1968 1969 Mt Ore
  • Year 1970
    Description Mt/Yr Ore 275000 Mt Ore
  • Year 1971
    Description Mt/Yr Ore 290000 Mt Ore
  • Year 1972
    Description Mt/Yr Ore 300000 Mt Ore
  • Year 1973
    Description Mt/Yr Ore 310000 Mt Ore
  • Year 1974
    Description Mt/Yr Ore 320000 Mt Ore
  • Year 1975
    Description Mt/Yr Ore 330000 Mt Ore
  • Year 1976
    Description Mt/Yr Ore 335000 Mt Ore
  • Year 1977
    Description Mt/Yr Ore 340000 Mt Ore
  • Year 1978
    Description Mt/Yr Ore 345000 Mt Ore
  • Year 1979
    Description Mt/Yr Ore 350000 Mt Ore
  • Year 1980
    Description Mt/Yr Ore 500000 Mt Ore
  • Year 1984
    Period 1981 Thru 1984
    Description 522750 Mt/Yr Ore 1981 Thru 1984 Mt Ore
  • Year 1985
    Description Mt/Yr Ore 230500 Mt Ore
  • Year 1986
    Description Mt/Yr Ore 113300 Mt Ore
  • Year 1987
    Description Mt/Yr Ore 14900 Mt Ore
  • Year 1988
    Description Mt/Yr Ore 34000 Mt Ore
  • Year 1989
    Description Mt/Yr Ore 120000 Mt Ore
  • Year 1993
    Accuracy Estimate
    Description Tin And Zinc Production (Estimated) 300000 Metric Tons Per Year.

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Indicated 10000000mt ore
    Demonstrated 10000000mt ore
    Total resources 10000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 4.21 wt-pct Zinc Trace 1992
    Tin Sn 0.51 wt-pct Tin Trace 1992
    Silver Ag 50 g/mt Silver Trace 1992
  • Type In-situ
    Estimate year 1964
    Measured 6500000mt ore
    Demonstrated 6500000mt ore
    Total resources 6500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 1.24 wt-pct Tin Trace 1964
    Zinc Zn 5 wt-pct Zinc Trace 1964

Comments on the reserve resource information

  • UNDERGROUND LODE MINING OF ZN & SN. MINE SCHEDULED FOR RESTARTI NG AFTER CAPITAL INVESTMENT IN 88. A NEW 2,000 TPD MILL BEING BUILT.
  • THE PRINCIPAL ZINC MINERAL IS MARMATITE (FERRIC IRON SULFIDE), THEREBY REQUIRING AN EXTRA PROCESSING STEP TO REMOVE IRON.

Workings at the site

  • Type of workings Underground
    Length 15000M
    Overall depth 500M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method OVERHAND 10-38
    Percent Waste Rock 25
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 2
    Length of Inclines (m) 0
    Slope of Inclines 0
    Avg. Length of Adits (m) 1000
    Number of Adits 9
    1st Condition of Workings OPEN
    Capacity 1488
    Capacity Units MT ORE/DAY
    Unit Production Cost 12
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 1
    Year of Information 1976
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 2
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method UNDERHAND 10-35
    Capacity 342
    Capacity Units MT ORE/DAY
    Unit Production Cost 20.18
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 1
    Year of Information 1989

Reference information

Bibliographic references

  • Production

    MINING JOURNAL, P. 257 (APRIL 9, 1993).

  • Reserve-Resource

    ENGINEERING AND MINING JOURNAL, MARCH 1992, P.51

  • Deposit

    AHLFELD, F., 1954, LOS YACIMIENTOS MINERALES DE BOLIVIA: BAN

  • Deposit

    MINERO DE BOLIVIA, LA PAZ, BOLIVIA, P. 42-44.

  • Deposit

    ENGINEERING AND MINING JR., 1975, INTERN. DIRECTORY OF MININ

  • Deposit

    MCGRAW HILL, N. Y., P. 212.

  • Deposit

    CAMPBELL,D.F.,GEOLOGY OF THE COLQURI MINE,ECON.GEOL.,42;1947

  • Deposit

    1-21.

  • Deposit

    LOS YACIMENTOS MINERALES Y HIDROCARBUROS DE BOLIVIA,GEOBOL B

  • Deposit

    AHLFIELD,F.,1964,PP149-150

  • Deposit

    MINERALS YEARBOOK-1972,VOL.III,INTERNATIONAL-BOLIVIA-TIN

  • Deposit

    MATERIALS SURVEY OF TIN-1953,J.C.RIDGE,PSU;DEPT OF COMMERCE,

  • Deposit

    CHAP.6,PP20

  • Deposit

    METALS SOURCEBOOK 8/12/74 ITEM (B3836)

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-1997 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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