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Cerro Nelly Occurrence

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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  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 10090400
MRDS ID BL10079
Record type Site
Current site name Cerro Nelly Occurrence
Alternate or previous names Nelly, Wilma

Geographic coordinates

Geographic coordinates: -67.73754, -22.71114 (WGS84)
Elevation 5600

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

  • LAT LONG FOR NELLY MINE

Commodities

Commodity Importance
Sulfur Primary

Materials information

Materials Type of material
Sulfur Ore
Chalcedony Gangue
Clay Gangue
Kaolinite Gangue
Opal Gangue

Alteration

  • (Local) Argillization, Silicification

Analytical data

Result ORE ASSAYS BY BALLIVIAN AND CORDERO (1969): AVERAGE 13.53% S, RANGE 7.06 TO 31.22%

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) Holocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)

Nearby scientific data

(1) -67.73754, -22.71114
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Stratovolcano

Ore body information

  • Depth to top 0M

Controls for ore emplacement

  • Porous Volcanic Rock

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Luis Ossio

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Total resources 2000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Sulfur S 40 wt-pct Sulfur Major 1990

Comments on the workings information

  • NO WORKINGS

Reference information

Bibliographic references

  • Deposit

    BALLIVIAN, M., AND CORDERO, G., 1969, INFORME SOBRE ASISTENCIA TECNICA AZUFRERA WILMA: SERVICIO GEOLOGICO DE BOLIVIA INFORME GB-M-655, 7P., MAPS 1:20,000; 1:2,500; 1:500.

  • Deposit

    ESPINOZA, A., 1990, MINTEC INTERNAL REPORT

  • Deposit

    GEOLOGICAL INVESTIGATIONS BY GEOBOL, BALLIVIAN AND CORDERO (1969

  • Other Database

    CIMRI

  • Reserve-Resource

    (1) ESPINOZA (1990)

General comments

Subject category Comment text
Deposit SULFUR OUTCROPS OVER AN AREA OF 185,000 SQUARE M AND OCCURS AS DISSEMINATIONS AND OPEN SPACE-FILLINGS OF VESICLES AND INTERCLAST VOIDS IN ALTERED TUFF AND VOLCANIC BRECCIA.

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.

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