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Tio Pepe

Occurrence 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. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10049024
MRDS ID MX00232
Record type Site
Current site name Tio Pepe
Related records 10206369

Geographic coordinates

Geographic coordinates: -115.90082, 32.18342 (WGS84)
Relative position 12 KM ESE OF 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
Diopside Gangue
Garnet 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 Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -115.90082, 32.18342
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Major Fold Axes Trend N 25-35 W. Prevailing Dips Of Metasedimentary Rocks 40-65 Degrees. Dip Of Foliation In Schist Is Generally Greater Than 75 Degrees.

Comments on the geologic information

  • IRREGULAR INTRUSIVES OF QUARTZ DIORITE IN MM TERRANE. TWO SMALL PENDANTS COMPOSED OF HORNFELS INTERBEDDED WITH THIN SUBPARALLEL LAYERS OF MARBLE AND TACTITE. PERVADED BY SMALL DIKES OF DIORITE AND PEGMATITE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Los Gavilanes District

Comments on the workings information

  • 8 TRENCHES, PITS, AND 4.5 M SHAFT.

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

General comments

Subject category Comment text
Deposit LIMESTONE BED REPLACED BY SCHEELITE-BEARING TACTITE, MAINLY ON NE SIDE OF LIMESTONE. SCHEELITE-BEARING ZONE 0.3 - 1.0 M WIDE, AVE. 0.5 M, AND ONLY 30 M LONG ALTHOUGH MARBLE-TACTITE BED IS 45 M LONG AT THE SURFACE.
Deposit 10-15 TONS OF SORTED ORE CONTAINING 0.4 - 0.6% WO3 PILED NEAR SHAFT IN 1943. ; INFO.SRC : 1 PUB

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.

Maps centered on this site