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El Audaz

Past Producer in Baja California, Mexico with commodity Tungsten
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10049026
MRDS ID MX00235
Record type Site
Current site name El Audaz
Related records 10205888

Geographic coordinates

Geographic coordinates: -115.99665, 32.21536 (WGS84)
Elevation 1500
Relative position ACROSS THE ARROYO FROM LOS GAVILANES.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

El Centro(quadrangle 1:250,000 scale)

Geographic areas

Country State
Mexico Baja California

Comments on the location information

  • ESTIMATE TO WITHIN 1 KM

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore
Calcite Gangue
Garnet Gangue
Idocrase Gangue
Pyroxene Gangue
Quartz Gangue

Mineral occurrence model information

Model code 42
USGS model code 14a
Deposit model name W skarn

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -115.99665, 32.21536
ListMap

Economic information

Ore body information

  • Strike NE
    Dip 50-60 NW

Comments on the geologic information

  • DEPOSIT IS IN A SMALL PENDANT OF MARBLE AND TACTITE; 90 M LONG, 15-50 M WIDE, IN AREA OF SCHIST INTRUDED BY F.GR. BIOTITE DIORITE, ABOUT 120 M NW OF MAIN BODY OF QUARTZ DIORITE. SMALL IRREGULAR MASSES OF QUARTZ DIORITE CROP OUT JUST E OF CENTER OF TACTITE BODY. SEVERAL SMALL PEGMATITE DIKES CROSSCUT ALL OTHER ROCKS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Los Gavilanes District

Ownership information

  • Type Owner-Operator
    Owner Cia. Minera Del Gran Oeste
    First year 1943

Production statistics

  • Year 1943
    Material ORE W
    Accuracy Estimate
    Description Ap_Grade: ^Ave. 0.9% Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Wo3 Ore Tungsten Tungsten 1wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1945
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.3 wt-pct Tungsten Major 1945

Comments on the reserve resource information

  • AVE. MINING WIDTH: 1.3 M

Comments on the workings information

  • FOUR PITS AND TWO ADITS. ONE ADIT WAS CONNECTED TO SURFACE VIA INCLINED SHAFT AND ALSO HAD 10 M WINZE.

Reference information

Bibliographic references

  • Deposit

    FRIES, CARL AND SCHMITTER, EDUARDO, 1945, SCHEELITE DEPOSITS IN THE NORTHERN PART OF SIERRA DE JUAREZ NORTHERN TERRITORY LOWER CALIFORNIA, MEXICO: USGS BULL 946-C, P. 73-101

  • Production

    FRIES AND SCHMITTER, 1945, P. 83.

General comments

Subject category Comment text
Deposit FOUR SUBPARALLEL SCHEELITE-BEARING ZONES, EACH ON THE SE SIDE OF A MARBLE BED. ONLY POSSIBLY COMMERCIAL ZONE WAS EXPOSED IN DRIFT AND WINZE: 35 M MAX. LENGTH AT SURFACE, WIDTH AVE. 1.0 M, FOLLOWED FOR 28 M DOWN-DIP, 0.7 M WIDE IN LOWEST WORKINGS, CUT BY TWO BARREN PEGMATITE DIKES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1987 Staude, John-Mark G. (Page, Norman J.) U.S. Geological Survey
Updater 01-OCT-1987 Leonard, Kenneth 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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