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La Barra

Past Producer in Sonora, Mexico with commodities Fluorine-Fluorite, Silver, Calcium, Iron
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10049073
MRDS ID MX00292
Record type Site
Current site name La Barra
Related records 10305644

Geographic coordinates

Geographic coordinates: -109.47147, 30.64045 (WGS84)
Location accuracy 1000(meters)
Relative position 20 KM DIRECTLY N OF LA CALIFORNIA DEPOSIT, AND IMMEDIATELY EAST OF CERRO EL SOMBREROTILLO. 14 KM S50E OF ESQUEDA., Estimated To Within 1 Km.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Sonora

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary
Silver Tertiary
Calcium Tertiary
Iron Tertiary

Comments on the commodity information

  • THE FLUORITE IS COARSE-GRAINED, MASSIVE, AND COMMONLY GREEN IN COLOR. IT MAY ALSO BE WHITE, PINK, OR DARK GRAY.

Materials information

Materials Type of material
Fluorite Ore
Hornblende Gangue
Orthoclase Gangue
Plagioclase Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -109.47147, 30.64045
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Sierra Madre Occidental
Type of structure Local
Structure description Faults

Ore body information

  • General form LINEAR
    Strike N20W
    Dip 70E
    Width 20M

Controls for ore emplacement

  • Fault Control

Comments on the geologic information

  • THE GRANITE IS INTRUDED AND OVERLAIN BY TERTIARY VOLCANICS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Medium
Significant No

Mining district

District name Nacozari

Ownership information

  • Type Owner-Operator
    Owner Fluoresqueda, S. A. (San Luis Mining Co.) --1963

Comments on the production information

  • PRODUCTION WAS LARGE UNTIL 1953; PRODUCTION DECREASED TO A SMALL AMOUNT FROM 1953-1955. THERE WAS NO PRODUCTION FROM 1955-1960. IN 1960, THE MINE BEGAN TO SUPPLY A 125 MTPD ACID GRADE PLANT. THE MINE MUST HAVE CLOSED SOMETIME DURING THE 1960'S BECAUSE IT REPORTEDLY RESUMED OPERATIONS IN 1970.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 100M

Comments on development

  • ECON.COM: ORE TRUCKED 20 KM TO 113 MTPD FLOTATION PLANT AND RAILROAD AT ESQUEDA.

Reference information

Bibliographic references

  • Deposit

    PEREZ SEGURA, EFREN, 1985, CARTA METALOGENETICA DE SONORA 1:250000 UNA INTERPRETACION DE LA METALOGENIA DE SONORA: UNIV. OF SONORA, DEPT. OF GEOL., HERMOSILLO, MEXICO, 66 P.

  • Deposit

    SALAS, GUILLERMO, 1973, LOS RECURSOS NATURALES NO RENOVABLES DE MEXICO: CONSEJO DE REC. NAT. NO RENOVABLES, BOLETIN 73, P. 84-85.

  • Deposit

    CONSEJO DE RECURSOS NATURALES NO RENOVABLES, 1967, MAPA GEOLOGICO DE LA PARTE SEPTENTRIONAL DEL ESTADO DE SONORA: CONSEJO DE RECS. NAT. NO RENOV., MEXICO, D.F., SCALE 1:100000.

  • Deposit

    PICKARD, G.W., 1974, GEOLOGY OF MEXICAN FLUORSPAR DEPOSITS, IN A SYMPOSIUM ON THE GEOLOGY OF FLUORSPAR: KENTUCKY GEOLOGICAL SURVEY SPECIAL PUBLICATION 22, P. 23-30.

  • Deposit

    VAN ALSTINE, R.E., 1963, INVESTIGATION OF THE PRINCIPAL FLUORSPAR DISTRICTS OF MEXICO: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 688, P. 87-89.

  • Deposit

    GONZALEZ S., J.R., 1985, RECURSOS MINERALES NO METALICOS Y ROCAS INDUSTRIALES DEL ESTADO DE SONORA: HERMOSILLO, SONORA, DIRECCION DE MINERIA, GEOLOGIA Y ENERGETICOS, 44 P.

  • Other Database

    CIMRI

  • Production

    VAN ALSTINE, 1963.

General comments

Subject category Comment text
Deposit EPITHERMAL FLUORITE VEINS IN RHYOLITIC HOST ROCK. INDIVIDUAL ORE SHOOTS ALONG THE VEIN ARE UP TO 20 M WIDE AND 200 M LONG.
Deposit SIMILAR TO LA CALIFORNIA DEPOSIT. THIS RECORD CONTAINS DATA FROM DUPLICATE MRDS RECORD W006958 WHICH HAS BEEN DELETED FROM MRDS. ; INFO.SRC : 1 PUB

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-87 Staude, John-Mark G. (Page, Norman J.) U.S. Geological Survey
Updater 01-NOV-87 Leonard, Kenneth R. U.S. Geological Survey
Updater 01-JUL-75 Schruben, Paul G. U.S. Geological Survey
Updater 01-DEC-92 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

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