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Estalsagravel Pump

Plant in La Paz, Bolivia with commodity 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. Ownership information
  11. Production statistics
  12. Reserves and resources
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10279967
MAS/MILS ID 3350200099
Record type Site
Current site name Estalsagravel Pump
Alternate or previous names Estalsa - Gravel Dump/Wash Plant

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -66.89948, -18.54763 (WGS84)

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
Tin Critical Primary

Materials information

Materials Type of material
Cassiterite Unknown

Nearby scientific data

Ore Body (1) -66.89948, -18.54763
ListMap

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 PLACER
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin RESIDUAL CONCENT
    Primary Ore Control LITHOLOGY
    Date of Last Modification 860829

Comments on the geologic information

  • THE MINE CAPACITY WAS 1230000 MTPY.
  • THE ELUVIAL MATERIAL COMPRISES THE WEATHERED MORRAINE MATERIAL LOCATED ABOVE THE RIVER BED. IT CONTAINS SOME CASSITERITE WHICH IS NOT FULLY LIBERATED.

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1963
Mining method Hydraulicking
Year of first production 1967
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Ownership information

  • Type Owner-Operator
    Owner Estalsa Boliviana Limitada
    Interest 100
    Year 1983

Comments on the ownership information

  • INITIALLY OWNED BY WR GRACE & CO. SOLD TO ESTALSA IN 1973.

Production statistics

  • Year 1977
    Description Mt Ore/Yr 550000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 550000mt
  • Year 1978
    Description Mt Ore/Yr 720000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 720000mt
  • Year 1979
    Description Mt Ore/Yr 760000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 760000mt
  • Year 1980
    Description Mt Ore/Yr 745000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 745000mt
  • Year 1981
    Description Mt Ore/Yr 750000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 750000mt
  • Year 1982
    Description Mt Ore/Yr 784960 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 784960mt

Comments on the production information

  • A $805.00 SMELTING COST AND A $0.31 MILLING COST PER TONNE ARE INCURRED IN THE PRODUCTION OF PRODUCT A. THERE ARE NO ACTUAL OR POTENTIAL BY-PRODUCTS OF ECONOMIC INTEREST PRODUCED.

Reserves and resources

  • Type In-situ
    Estimate year 1989
    Indicated 11157000mt ore
    Demonstrated 11157000mt ore
    Total resources 11157000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 0.031 wt-pct Tin Major 1989

Comments on the reserve resource information

  • PER CRU ESTALSA BOLIVIANA LEFT THE ASSOCIATION AS ITS DREDGING OPERATION WAS COMPLETELY STOPPED.
  • ETA UPDATE RESOURCE 1-89 11,157,000 MT.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HYDRAULICKING
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore SAND, GRAVEL
    Capacity 3800
    Capacity Units MT ORE/DAY
    Unit Production Cost .92
    Units of Production $/MT ORE
    Operating Days per Year 330
    Operating Shifts per Day 3
    Year of Information 1983
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method HYDRAULICKING
    Capacity 3800
    Capacity Units MT ORE/DAY
    Unit Production Cost .45
    Units of Production $/MT ORE
    Operating Days per Year 330
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • APPROXIMATELY 41% OF THE TOTAL TIN PRODUCTION IN CONCENTRATES ARE DERIVED FROM THE SCRAPER/WASH PLANT OPERATION.
  • THE ESTALSA OPERATION COMPRISES A DREDGE INSTALLATION AND THREE SCRAPER/WASH PLANT UNITS. THIS REPORT COVERS THE SCRAPER/WASH PLANT OPERATIONS.

Reference information

Bibliographic references

  • Deposit

    TAYLOR, R.G., GEOLOGY OF TIN DEPOSITS, ELSEVIERS, 1979.

  • Deposit

    FOX, D.J., TIN MINING IN BOLIVIA, MINING MAGAZINE, JANUARY

  • Deposit

    1972.

Reporter information

Type Date Name Affiliation Comment
Reporter 06-FEB-1995 Sabin, A. E. 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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