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La Bofa

Past Producer in Sonora, Mexico with commodity Antimony
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Mineral occurrence model information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10049195
MRDS ID MX00448
Record type Site
Current site name La Bofa
Related records 10279644

Geographic coordinates

Geographic coordinates: -112.5885, 30.73459 (WGS84)

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

Comments on the location information

  • ESTIMATE TO WITHIN 0.5 KM.

Commodities

Commodity Importance
Antimony Critical Primary

Mineral occurrence model information

Model code 180
USGS model code 27d
Deposit model name Simple Sb (veins, pods, etc)

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Monos Formation
    Rock description Monos Formation
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Triassic

Nearby scientific data

(1) -112.5885, 30.73459
ListMap

Economic information

Ore body information

  • Strike 1>N 65 E, 2>N, 3>N 75 E, 4>N 30 W
    Dip 1>30 SE, 2>45-70 E, 3>35 N, 4>65 N
    Plunge 25 N
    Plunge direction N 20 W
    Thickness 1.5M
    Width 3M

Controls for ore emplacement

  • Intersection Of Two Minor Veins.

Economic information about the deposit and operations

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

Mining district

District name El Antimonio/La Montana

Comments on the production information

  • MINE ESTIMATED TO HAVE PRODUCED SEVERAL HUNDRED TONS OF SHIPPING ORE (40% SB) AND A LARGER AMOUNT OF MILL ORE (5-15% SB) BY 1943.

Workings at the site

  • Type of workings Unknown
    Overall depth 12M

Reference information

Bibliographic references

  • Deposit

    WHITE, D.E. AND GUIZA, REINALDO, 1949, ANTIMONY DEPOSITS OF EL ANTIMONIO DISTRICT, SONORA, MEXICO: U.S. GEOLOGICAL SURVEY BULLETIN 962-B, P.4, 26, PLATE 15

  • Production

    WHITE AND GUIZA, 1949.

General comments

Subject category Comment text
Deposit FOUR VEINS IN ARKOSIC SANDSTONE, NONE WORKED FOR MORE THAN 12 M BELOW SURFACE. ATTITUDES OF TWO STRONGEST VEINS (STRIKE, DIP): N 65 E, 30 SE; AND DUE N, 45-70 E. BEST ORE CAME FROM INTERSECTION OF TWO MINOR VEINS WITH ATTITUDES OF N 75 E, 35 N AND N 30 W, 65 N. INTERSECTION PLUNGES APPROX. 25 N ALONG N 20 W TREND. NEARLY ALL ORE MINED WAS CLOSE TO INTERSECTION. MAX. THICKNESS OF THE ORE BODY WAS APPROX. 1.5 METERS AND MAX. WIDTH APPROX. 3.0 METERS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1987 Leonard, Kenneth R. (Page, Norman 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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