Copahuancara Mine

Producer in La Paz, Bolivia with commodities Tin, Copper
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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Reserves and resources
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10006294
MRDS ID BL20282
Record type Site
Current site name Copahuancara Mine
Alternate or previous names Churiaqui, Copabancara

Geographic coordinates

Geographic coordinates: -68.19312, -16.24353 (WGS84)
Elevation 4380
Relative position 7.1 KM N40W OF MILLUNI

Site location context

Political divisions (FIPS codes)

La Paz(province)

Bolivia(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Bolivia La Paz
Bolivia La Paz

Comments on the location information

  • CONCESSION 274 HECTARES IN AREA ON NW FLANK OF CERRO IMILLA APACHETA

Commodities

Commodity Importance
Tin Critical Primary
Copper Secondary

Materials information

Materials Type of material
Cassiterite Ore
Chalcopyrite Ore
Fluorite Gangue
Pyrite Gangue
Quartz Gangue
Siderite Gangue
Tourmaline Gangue

Alteration

  • (Local) Silicification And Greisen Overprint Contact Metamorphism

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Huayna Potosi
    Rock description Huayna Potosi
    Stratigraphic age (youngest) Late Silurian
    Stratigraphic age (youngest) Late Silurian
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Uncia
    Rock description Uncia

Nearby scientific data

(1) -68.19312, -16.24353

Economic information

Geologic structures

Type of structure Regional
Structure description Nw-Se Folding And E-W Transverse Fractures

Ore body information

  • General form TABULAR
    Strike N 85 E
    Dip 50 NW
    Thickness 0.01M
    Length 300M
    Width 200M

Controls for ore emplacement

  • Contact Zone Between Granite And Silurian Sediments

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1962
Discoverer Devon Corporation
Year of first production 1963
Year of last production 1991

Mining district

District name Huallatani

Ownership information

  • Type Owner-Operator
    Owner Julio Torres Vargas

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 18422000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 1.4 wt-pct Tin Major 1983
  • Type In-situ
    Estimate year 1983
    Total resources 13824000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 0.7 wt-pct Tin Major 1983

Comments on the reserve resource information

  • (1) PROBABLE, (2) POSSIBLE, (3) PROSPECTIVE

Workings at the site

  • Type of workings Underground
    Length 300M
    Overall depth 200M

Comments on the workings information

  • TUNNELS

Comments on development

  • ECON.COM: GRAVITY CONCENTRATION

Reference information

Bibliographic references

  • Deposit

    USCAMAITA, E., JEMIO, J., AND GODINEZ, J., 1983, COPAHUANCARA MINE SEMIMECHANIZATION PROJECT: GEOBOL INTERNAL REPORT

  • Deposit

    GUSTAVSON ASSOC., 1992, COMPENDIUM OF THE ECONOMIC GEOLOGY OF BOLIVIA

  • Deposit

    LEHMANN, BERND, 1979, SCHICHTGEBUNDE SN-LAGERSTATTEN IN DER CORDILLERA REAL/BOLIVIEN: BERLINER GEOWISSENSCHAFTEN ABHANDLUNGEN, RIEHA A, NO. 14, 135 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit LENSES AND VEINLETS. VEIN-1 100 M LONG, VEIN-2 100 M LONG; VEIN-3 POORLY EXPLORED, FLORES VEIN 50 M LONG.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1991 Cardenas, Nestor Servicio Geologic de Bolivia
Updater 01-OCT-1993 Long, Keith R. U.S. Geological Survey

Beyond USGS

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