San Francisco Mine

Producer in La Paz, Bolivia with commodities Tungsten, Tin, Copper, Arsenic, Lead, Zinc
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. Ownership information
  16. Production statistics
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10080345
MRDS ID W031466
Record type Site
Current site name San Francisco Mine

Geographic coordinates

Geographic coordinates: -67.89007, -16.47659 (WGS84)
Elevation 4490
Relative position 10.7 KM N35E OF PALCA

Site location context

Political divisions (FIPS codes)

La Paz(province)

Bolivia(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Bolivia La Paz

Comments on the location information

  • ON SW FLANK OF CERRO MERCEDES

Commodities

Commodity Importance
Tungsten Critical Primary
Tin Critical Primary
Copper Tertiary
Arsenic Critical Tertiary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Chalcopyrite Ore
Galena Ore
Scheelite Ore
Sphalerite Ore
Wolframite Ore
Chlorite Gangue
Fluorite Gangue
Muscovite Gangue
Pyrite Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Narrow, Irregular Muscovite-Chlorite Selvages Around Veins. Chlorite (After Biotite), Muscovite, Tourmaline Alteration In Host Rock.

Mineral occurrence model information

Model code 46
USGS model code 15a
Deposit model name W veins

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Taquesi-Mururata Batholith
    Rock description Taquesi-Mururata Batholith

Nearby scientific data

(1) -67.89007, -16.47659

Economic information

Ore body information

  • General form PINCH AND SWELL
    Strike N 45-55 E
    Dip 75-90 SE
    Length 2200M
    Width 1000M

Controls for ore emplacement

  • Faults, Fractures, And Shear Zones

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No

Mining district

District name Taquesi-Mururata

Ownership information

  • Type Owner-Operator
    Owner International Mining Co.

Production statistics

  • Year 1968
    Material CON
    Accuracy Accurate
    Description Ap_Grade: ^50.22% Wo3, 15.48% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Conc. Tin Tin 15wt-pct
    Major WO3 Conc. Tungsten Tungsten 50wt-pct

Comments on the production information

  • MAJOR ORE PRODUCER IN THE PAST, PRESENTLY DECLINING PRODUCTION DUE TO LOWER GRADE ORE

Comments on the workings information

  • SHAFTS, ADITS, CROSSCUTS, DRIFTS, AND RAISES.

Comments on development

  • ECON.COM: CRUDE GRAVITY CONCENTRATION.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit WORKED IN CONJUNCTION WITH ADJACENT ANDINA MINE (MRDS RECORD #W041465) ; INFO.SRC : 1 PUB LIT
Deposit SEVERAL SUBPARALLEL VEINS UP TO 1.5 KM LONG, 0.05 TO 1.2 M WIDE (AVERAGE 0.25 M WIDE). MAIN VEIN IS LA SALVADORA WHICH WAS WORKED OVER A LENGTH OF 70 M, TO A DEPTH OF 40 M, AND HAD AN AVERAGE WIDTH OF 0.40 M. OTHER VEINS INCLUDE BOLIVAR AND AYALA. ORE OCCURS IN WELL DEFINED SHOOTS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1981 Ericksen, George E. (Rowe, William D.) U.S. Geological Survey
Updater 01-DEC-1993 Long, Keith R. U.S. Geological Survey

Beyond USGS

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