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Estalsa Dredgeavicaya

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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10239093
MAS/MILS ID 3350200084
Record type Site
Current site name Estalsa Dredgeavicaya
Alternate or previous names Estalsa Dredge

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

  • Thickness 27.4M
    Depth to top 3.4M
    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
    Avg. Thick. Unconsol. Mat. 30.8
    Date of Last Modification 860829

Comments on the geologic information

  • THE ESTALSA SECONDARY TIN DEPOSIT IS PARTLY THE ALLUVIAL FILL IN THE BED OF THE ANTEQUERO RIVER PRODUCED BY GLACIAL AND WATER EROSION OF THE MINERALIZED VEINS OF THE PRIMARY DEPOSIT OF THE ANTEQUERA-CHUALLA RIDGE.

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1963
Mining method Dredging
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

  • PROPERTY INITIALLY OWNED BY WR GRACE & CO SOLD TO ESTALSA IN 1973 AS PART OF A PACKAGE OF MINING PROPERTIES.

Production statistics

  • Year 1968
    Description Mt Ore/Yr 3745000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 3745000mt
  • Year 1969
    Description Mt Ore/Yr 4742000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 4742000mt
  • Year 1970
    Description Mt Ore/Yr 4213000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 4213000mt
  • Year 1971
    Description Mt Ore/Yr 4073000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 4073000mt
  • Year 1972
    Description Mt Ore/Yr 3624000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 3624000mt
  • Year 1973
    Description Mt Ore/Yr 4543000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 4543000mt
  • Year 1974
    Description Mt Ore/Yr 4913000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 4913000mt
  • Year 1975
    Description Mt Ore/Yr 6379000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 6379000mt
  • Year 1976
    Description Mt Ore/Yr 5979000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 5979000mt
  • Year 1977
    Description Mt Ore/Yr 5906000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 5906000mt
  • Year 1978
    Description Mt Ore/Yr 5162000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 5162000mt
  • Year 1979
    Description Mt Ore/Yr 3984000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 3984000mt
  • Year 1980
    Description Mt Ore/Yr 3533000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 3533000mt
  • Year 1981
    Description Mt Ore/Yr 4428000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 4428000mt
  • Year 1990
    Period 1982-1990
    Description 3490240 Mt Ore/Yr 1982 Thru 1990 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 3490240mt
  • Year 1991
    Description Mt Ore/Yr 433080 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 433080mt

Comments on the production information

  • A $805.00 SMELTING COST AND A $0.10 MILLING COST PER TONNE ARE INCURRED IN THE PRODUCTION OF PRODUCT A. THERE ARE NO ACTUAL OR POTENTIAL BY-PRODUCTS OF ECONOMIC INTEREST PRODUCED.

Comments on the reserve resource information

  • SEE 3350200100 THE COMPANY OPERATES A 14 SQ FT DREDGE AND TWO WASHING PLANTS. PER CRU DURING 1988 ESTALSA BOLIVIANA LEFT THE ASSOCIATION AS IT DREDGING OPERATION WAS COMPLETELY STOPPED.
  • ETD UPDATE 1-89 RESOURCES 7,413,500 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 DREDGING
    Avg. Overburden Thickness 3.4
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore SAND, GRAVEL
    Capacity 10600
    Capacity Units MT ORE/DAY
    Unit Production Cost .41
    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 DREDGING
    Capacity 10580
    Capacity Units MT ORE/DAY
    Unit Production Cost .2
    Units of Production $/MT ORE
    Operating Days per Year 330
    Operating Shifts per Day 6
    Year of Information 1990

Comments on other economic factors

  • THE ESTALSA OPERATIONS COMPRISE A DREDGE INSTALLATION AND THREE SCRAPER/WASH PLANT UNITS, THIS REPORT COVERS THE DREDGE OPERATION ONLY.

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 17-NOV-1992 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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