Milluri Mine

Producer in Potosi, Bolivia with commodity Sulfur
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. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10005959
MRDS ID BL10177
Record type Site
Current site name Milluri Mine
Alternate or previous names Oca?a, Volcan Oca?a, Primera Esperanza, Salvadora

Geographic coordinates

Geographic coordinates: -68.42757, -20.61452 (WGS84)
Elevation 4820
Relative position 9 KM S65W OF ESTANCIA EMPEXA

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 CERRO MILLURI, E FLANK VOLCAN OCA%A. ONE OF SEVERAL S DEPOSITS ON THIS VOLCANO, MOST OF WHICH ARE IN CHILE

Commodities

Commodity Importance
Sulfur Primary

Materials information

Materials Type of material
Sulfur Ore
Gypsum Gangue
Kaolinite Gangue
Opal Gangue

Alteration

  • (Local) Silicification, Argillization

Analytical data

Result AVERAGE GRADE 40%

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

Nearby scientific data

(1) -68.42757, -20.61452

Economic information

Geologic structures

Type of structure Local
Structure description Stratovolcano

Ore body information

  • General form BLANKET
    Strike E-W
    Dip 15-20 E
    Thickness 6M
    Length 500M
    Width 150M
    Depth to top 0M
    Depth to bottom 6M

Controls for ore emplacement

  • Porous Volcanic Rock Beneath Impermeable Lava Flow

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Significant No

Mining district

District name Oca%A Volcano

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Simon Romero A. And Arturo Romero E.

Reserves and resources

  • Type In-situ
    Estimate year 1964
    Total resources 80000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Sulfur S 60 wt-pct Sulfur Major 1964

Comments on the workings information

  • ADITS

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    CAMPUSANO, C. 1954?, BANCO MINERO INTERNAL REPORT

  • Deposit

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

  • Other Database

    CIMRI

  • Reserve-Resource

    (1) AHLFELD ET AL (1964); (2) CAMPUSANO (1954?); (3) AVILA (N.D.)

General comments

Subject category Comment text
Deposit BLANKET DEPOSIT OF SULFUR DISSEMINATED AND FILLING FRACTURES IN ALTERED TUFF CAPPED BY AN ANDESITIC LAVA FLOW 3 TO 4 M THICK.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-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.