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Mallachuma Mine

Producer 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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10080449
MRDS ID W031642
Record type Site
Current site name Mallachuma Mine

Geographic coordinates

Geographic coordinates: -67.43282, -17.04768 (WGS84)
Elevation 5100
Relative position 7 KM W. OF QUIME

Site location context

Political divisions (FIPS codes)

La Paz(province)

Bolivia(country)

South America(continent)

Land(continent)

Federal lands

Federal(land status)

Geographic areas

Country State
Bolivia La Paz

Comments on the location information

  • ON THE EASTERN FLANK OF THE TRES CRUCES CORDILLERA
  • PREVIOUS QUAD DESIGNATION = COROCORO (SE 19-7) 1:250000

Commodities

Commodity Importance
Tin Critical Primary

Materials information

Materials Type of material
Pyrite Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Tourmalinization

Mineral occurrence model information

Model code 77
USGS model code 20b
Deposit model name Sn-polymetallic vein

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -67.43282, -17.04768
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Sedimentary Rocks Folded Into A Broad Anticline Trending Nw-Se

Ore body information

  • General form TABULAR
    Length 500M
    Width 1.5M
    Depth to top 0M
    Depth to bottom 300M

Controls for ore emplacement

  • Tension Fractures

Comments on the geologic information

  • U MINERALIZATION IS ASSOCIATED WITH YELLOWISH ALTERED SHALE AND GYPSUM OF THE CHUQUICHAMBI FORMATION.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No

Mining district

District name Atoroma-Mallachuma

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Atotoma Mineral Co.

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Total resources 101547000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 2.37 wt-pct Tin Major 1976
  • Type In-situ
    Estimate year 1976
    Total resources 52398000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 2.51 wt-pct Tin Major 1976
  • Type In-situ
    Estimate year 1976
    Total resources 37944000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 3.17 wt-pct Tin Major 1976

Workings at the site

  • Type of workings Underground
    Overall depth 300M

Comments on the workings information

  • A 100 M 30 DEGREE RAMP AT PORFIA MINE WITH 3 MAJOR CROSS CUTS

Comments on development

  • MILL.CAP: 24,000 MT ; ECON.YEAR: 1976 ; ECON.COM: 2 % SN ON MILL HEADS
  • CHACARILLA GROUP PURCHASED BY NITTO METAL MINING CO. LTD. 8/1961 (EXCEPT FOR CONGRESO, INCA AND DON HERNAN PROPERTIES). PROPERTY WAS 3,438 HA IN AREA. AFTER DRILLING CUMULATIVE 3000 M IN 25 DH CHOSE TO DEVELOP MINE CENTERED ON PORFIA PROPERTY ; TOTAL$: 4000 ; MILL.CAP: 90 ; ECON.YEAR: 1963 ; ECON.COM: IN EARLY 60'S PRODUCED 15O MT/MO 20% CU CONS AND 350 MT/MO 4% CU ORE THAT WERE SENT TO COROCORO MILL. PLANNED EXPANSION IN EARLY 60'S TO 10,000 OR 17,500 MT/MO.

Reference information

Bibliographic references

  • Deposit

    AHLFELD, F. AND SCHNEIDER-SCHERBINA, A. 1964, LOS YACIMIENTOS MINERALES Y DE HIDROCARBUROS DE BOLIVIA: DEPARTAMENTO NACIONAL DE BOLIVIA, BOL. 5

General comments

Subject category Comment text
Deposit VEINS LOCATED IN ZONE OF CONTACT METAMORPHISM AND IN GRANITIC INTRUSIVE.
Deposit PORFIA MINE HAS 3 MANTOS ORIENTED N45 TO 55W 80 TO 90SW, 2 TO 4 M THICK. EUREKA-TEVI%A-SAN FERMIN MINES HAVE 4 MANTOS ORIENTED N35W 30 TO 45W. MIZAGUE MINE HAS 8 MANTOS ORIENTED N35W 30 TO 45W AND IS A PROLONGATION OF EUREKA-TEVI%A-SAN FERMIN TRENDS. AMIGO-BORDA-ESPERANZA PROSPECTS HAVE 4 MANTOS ORIENTED N-S 20SW.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1978 Urquidi-Barrau, Fernando Department of State

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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