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Esperanza Mine

Past Producer in Potosi, Bolivia with commodities Silver, Lead
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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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  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 10005898
MRDS ID BL10077
Record type Site
Current site name Esperanza Mine
Alternate or previous names Segunda Esperanza

Geographic coordinates

Geographic coordinates: -66.48889, -21.80922 (WGS84)
Elevation 4185
Relative position 4.5 KM N30E OF GUADALUPE

Site location context

Political divisions (FIPS codes)

Potosi(province)

Bolivia(country)

South America(continent)

Land(continent)

Federal lands

Federal(land status)

Geographic areas

Country State
Bolivia Potosi

Comments on the location information

  • ON NORTH FLANK OF CERRO MAYAROC IN THE QUEBRADA RIO SANTA ROSA. SEGUNDA ESPERANZA IS A SECOND WORKING E OF ESPERANZA AT 4650 M ALTITUDE.

Commodities

Commodity Importance
Silver Primary
Lead Tertiary

Materials information

Materials Type of material
Galena Ore
Clay Gangue
Limonite Gangue

Alteration

  • (Local) Kaolinization

Analytical data

Result ORE ANALYSES BY CORTEZ AND KURONUMA (1969): 0.004 TO 0.02% AG

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite

Nearby scientific data

(1) -66.48889, -21.80922
ListMap

Economic information

Ore body information

  • Strike N50W
    Dip 80SW AND 88NE
    Depth to top 0M

Controls for ore emplacement

  • Fractures

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1967

Mining district

District name Cerro Bonete

Land status

Ownership category Federal

Workings at the site

  • Type of workings Underground
    Length 36M

Comments on the workings information

  • 2 ADITS.

Reference information

Bibliographic references

  • Deposit

    CORTEZ, L., AND KURONUMA, H., 1969, INFORME SOBRE ASISTENCIA TECNICA MINA ESPERANZA Y SEGUNDA ESPERANZA: SERVICIO GEOLOGICO DE BOLIVIA INFORME GB-M-645, 9P., MAP 1:500

  • Deposit

    GEOLOGICAL INVESTIGATIONS BY GEOBOL, CORTEZ AND KURONUMA (1969

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit VEIN AT ESPERANZA STRIKES N50W DIPS 80SW AND IS 5 TO 50 CM WIDE. VEIN AT SEGUNDA ESPERANZA STRIKES N50W DIPS 88NE AND IS 83 CM WIDE. ESPERANZA VEIN CONTAINS GALENA. SEGUNDA ESPERANZA VEIN CONTAINS FE OXIDES, LIMONITE, AND CLAY.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1990 Long, Keith R. U.S. Geological Survey

Beyond USGS

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

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