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Milluni

Plant in La Paz, Bolivia with commodities Bismuth, Tin
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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 10304147
MAS/MILS ID 3350200024
Record type Site
Current site name Milluni

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -68.09951, -16.3677 (WGS84)
Elevation 5000
Location accuracy 10000(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
Bismuth Critical Tertiary
Tin Critical Tertiary

Materials information

Materials Type of material
Arsenopyrite Unknown
Cassiterite Unknown
Galena Unknown
Pyrite Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) -68.09951, -16.3677
ListMap

Economic information

Ore body information

  • Thickness 1.5M
    Length 1400M
    Area 10HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 SERICITIC
    Type of Wallrock Alter. #3 CARBONATE SILIC
    Strike And Dip N00S:
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 10
    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 1914
Mining method Filled Stopes - Horiz Cut and Fill W/Waste Rock
Year of first production 1914
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name Chacaltaya

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 Fabulosa Mines Consolidated
    Interest 100
    Home office Bolivia
    Year 1976

Production statistics

  • Year 1968
    Material Ore
    Ore mined 49000mt
    Description Mt Ore/Yr 49000 Mt Ore
  • Year 1969
    Material Ore
    Ore mined 51000mt
    Description Mt Ore/Yr 51000 Mt Ore
  • Year 1970
    Material Ore
    Ore mined 51000mt
    Description Mt Ore/Yr 51500 Mt Ore
  • Year 1971
    Material Ore
    Ore mined 52000mt
    Description Mt Ore/Yr 52000 Mt Ore
  • Year 1972
    Material Ore
    Ore mined 53000mt
    Description Mt Ore/Yr 53000 Mt Ore
  • Year 1973
    Material Ore
    Ore mined 54400mt
    Description Mt Ore/Yr 54400 Mt Ore
  • Year 1974
    Material Ore
    Ore mined 56000mt
    Description Mt Ore/Yr 56000 Mt Ore
  • Year 1975
    Material Ore
    Ore mined 55000mt
    Description Mt Ore/Yr 55000 Mt Ore
  • Year 1976
    Material Ore
    Ore mined 58000mt
    Description Mt Ore/Yr 58000 Mt Ore
  • Year 1977
    Material Ore
    Ore mined 58500mt
    Description Mt Ore/Yr 58500 Mt Ore
  • Year 1978
    Material Ore
    Ore mined 60000mt
    Description Mt Ore/Yr 60000 Mt Ore
  • Year 1979
    Material Ore
    Ore mined 65000mt
    Description Mt Ore/Yr 65000 Mt Ore
  • Year 1980
    Material Ore
    Ore mined 90000mt
    Description Mt Ore/Yr 90000 Mt Ore
  • Year 1981
    Material Ore
    Ore mined 110000mt
    Description Mt Ore/Yr 110000 Mt Ore
  • Year 1982
    Material Ore
    Ore mined 112000mt
    Description Mt Ore/Yr 112000 Mt Ore
  • Year 1988
    Period 1983 - 1988
    Material Ore
    Ore mined 112000mt
    Description 112000 Mt Ore/Yr 1983 Thru 1988 Mt Ore
  • Year 1989
    Material Ore
    Ore mined 61000mt
    Description Mt Ore/Yr 61000 Mt Ore

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Measured 200000mt ore
    Indicated 300000mt ore
    Demonstrated 500000mt ore
    Inferred 1000000mt ore
    Total resources 1500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 0.85 wt-pct Tin Trace 1976

Comments on the reserve resource information

  • 50,100 MT 1-89 PER ETD UPDATE.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Waste Rock 25
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 1
    1st Condition of Workings OPEN
    Capacity 600
    Capacity Units MT ORE/DAY
    Unit Production Cost 15
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 1
    Year of Information 1976

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    MINERO DE BOLIVIA, LA PAZ, BOLIVIA, PP. 32.

  • Deposit

    E/MJ INT.DIRECTORY,1975.76 PP.213.

General comments

Subject category Comment text
Deposit 76-RCD-601-GR. IS FROM ACTUAL PROD.ORE GRADE(1974)- FROM RC ACTUAL 1974 ORE TONNAGE:90000 MET TONS,MINE&MILL BEING EXPAN 600 TPD CAP.(1976).

Reporter information

Type Date Name Affiliation Comment
Reporter 13-NOV-92 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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