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Volcan Olca Mines

Occurrence in Potosi, Bolivia with commodity Sulfur
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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. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10005961
MRDS ID BL10179
Record type Site
Current site name Volcan Olca Mines
Alternate or previous names Tres Rayas, Candelaria, Carlota

Geographic coordinates

Geographic coordinates: -68.47118, -20.9384 (WGS84)
Elevation 5320
Relative position 25 KM S40W OF CANA

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

  • GEODETIC COORDINATES ARE FOR TRES RAYAS MINE, CARLOTA MINE IS AT 20-56-17S 68-27-30W, 1.4 KM N75E

Commodities

Commodity Importance
Sulfur Primary

Materials information

Materials Type of material
Sulfur Ore
Gypsum Gangue
Kaolinite Gangue

Alteration

  • (Local) Argillization

Mineral occurrence model information

Model code 167
USGS model code 25m
Deposit model name Fumarolic sulfur

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -68.47118, -20.9384
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Stratovolcano

Ore body information

  • Depth to top 0M

Comments on the geologic information

  • ACTIVE FUMAROLIC ACTIVITY IN AREA

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No

Mining district

District name Olca

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Cooperativa Cresis

Reserves and resources

  • Type In-situ
    Estimate year 1964
    Total resources 200000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Sulfur S 55 wt-pct Sulfur Major 1964

Reference information

Bibliographic references

  • Deposit

    AHLFELD, F., AND SCHNEIDER-SCHERBINA, A., 1964, LOS RECURSOS MINERALES Y DE HIDROCARBUROS DE BOLIVIA: DEPARTAMENTO NACIONAL DE GEOLOGIA BOLTIN 5, P. 332.

  • Deposit

    AVILA, W., SULFUR VOLCANOGENIC DEPOSITS: MINISTERIO DE MINERIA INFORME 545

  • Deposit

    VISITED BY USGS/GEOBOL AUG. 19, 199

  • Other Database

    CIMRI

  • Reserve-Resource

    (1) AHLFELD ET AL (1964); (2) AVILA (N.D.)

General comments

Subject category Comment text
Deposit WESTERN ZONE IS AN AREA OF ACTIVE FUMAROLES IN ALTERED TUFF. EASTERN ZONE CONSISTS OF AN AREA OF 30 BY 100 M OF SOLFATARIC ALTERATION WITH DISSEMINATED S. A ZONE OF MN AND FE STAINING OCCURS IN AGGLOMERATE OVERLYING MINERALIZED BASALTIC ANDESITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1990 Long, Keith R. U.S. Geological Survey
Updater 01-SEP-1993 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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