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  3. Mineral Resource Data System (MRDS)

La Fortuna

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. Alteration
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10098744
MRDS ID MX00447
Record type Site
Current site name La Fortuna
Related records 10133352

Geographic coordinates

Geographic coordinates: -112.60183, 30.72404 (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

Alteration

  • (Local) Porphyry Adjacent To Vein Is Chalky White In Color And Has Been Impregnated With Calcite.

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 Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -112.60183, 30.72404
ListMap

Economic information

Ore body information

  • Strike N 85 E (AVE.)
    Dip 37-85 N
    Thickness 3M
    Length 120M
    Width 20M
    Depth to bottom 20M

Controls for ore emplacement

  • Junctions Of Main Vein With Flat-Dipping Offshoots.

Comments on the geologic information

  • VERTICAL SHAFT 12 M N OF OUTCROP IN DIORITE OVERLYING QUARTZ PORPHYRY. ANOTHER SHAFT 40 M N OF VEIN IS ENTIRELY IN DIORITE. LA FORTUNA VEIN MAY BE APPROX. PARALLEL TO DIORITE/PORPHYRY CONTACT. VEIN MAY ONCE HAVE CROPPED OUT NEAR ITS WESTERN END, BUT EVERYWHERE ELSE IT WAS COVERED BY GRAVELS 3.5 M DEEP.

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 Fortuna

Ownership information

  • Type Owner
    Owner Rafael Ruiz, El Antimonio, Sonora, Mx.
    First year 1943

Production statistics

  • Year 1943
    Period -1943
    Material ORE SB
    Accuracy Estimate
    Description Cp_Grade: ^40-45% Sb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Antimony Antimony 43wt-pct

Comments on the production information

  • MOST PRODUCTIVE MINE IN IGNEOUS HOST ROCKS OF THE DISTRICT.

Workings at the site

  • Type of workings Underground
    Overall depth 20M

Comments on the workings information

  • VEIN MINED FOR A DISTANCE OF 120 M AND TO A DEPTH OF MORE THAN 20 M. WORKINGS ACCESSIBLE IN 1943 TO A DEPTH OF 18 M, DEEPER WORKINGS FILLED WITH WASTE. DEPTH OF WATER TABLE ESTIMATED TO BE 20-30 M BELOW DEEPEST WORKINGS. AT LEAST TWO SHAFTS.

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.109, PLATE 24

  • Production

    WHITE AND GUIZA, 1949.

General comments

Subject category Comment text
Deposit SB-BEARING VEIN .25-3.0 M WIDE. VEIN SPLITS REPEATEDLY DOWN DIP, SENDING OFFSHOOTS INTO HANGING WALL THAT ARE FLAT NEAR THE VEIN BUT STEEPEN TO THE NORTH. MOST ORE FOUND AT JUNCTIONS OF THE MAIN VEIN WITH OFFSHOOTS.

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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