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El Volcan

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

Geologic information

Identification information

Deposit ID 10048874
MRDS ID MX00045
Record type Site
Current site name El Volcan
Alternate or previous names Piedra Iman

Geographic coordinates

Geographic coordinates: -109.30894, 27.75026 (WGS84)
Relative position 50 KM ENE OF CUIDAD DE OBREGON.

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

  • ESTIMATED TO NEAREST 15 SECONDS.; PREVIOUS QUAD DESIGNATION = CUIDAD OBREGON 1:250000

Commodities

Commodity Importance
Iron Primary

Comments on the commodity information

  • 37.63% MAG, 65.49% FE SOL, 4.30% FE ++, TRACE MGO, .728 TIO2, .078 CU.

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Pyrite Ore
Apatite Gangue
Biotite Gangue
Chalcopyrite Gangue
Quartz Gangue

Alteration

  • (Local) Magnetite Altered To Hematite

Analytical data

Result 65.70% TOTAL FE, 2.60% SILICA, 0.006% TOTAL S, 0.50% CAO, 0.904% P, 0.006% MN
Result CABRERA, ET.AL., 1983, TABLE IV.

Mineral occurrence model information

Model code 158
USGS model code 25i
Deposit model name Volcanic-hosted magnetite

Host and associated rocks

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

Nearby scientific data

(1) -109.30894, 27.75026
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Discordant To Outline Of Rhyolite Dome

Ore body information

  • Thickness 20M
    Length 200M

Comments on the geologic information

  • RHYOLITIC DOME WITH RHYOLITIC FLOWS. THE ROCK IS APHANITIC WITH PORPHYROCLASTS OF QUARTZ AND KAOLINIZED FELDSPAR. THE RHYOLITE IS COMPRISED OF 8% QUARTZ, 30% K-FELDSPAR, 1% BIOTITE, 2% OPAQUES, AND 59% GLASSY MATRIX. THE QUARTZ IS BIPYRAMIDAL AND RESORBED INTO THE MATRIX.

Economic information about the deposit and operations

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

Mining district

District name /Rosario

Comments on the production information

  • TOTAL AMOUNT EXTRACTED BY CUBAN MINERS DURING EARLY 1900'S

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 10650437000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 65 wt-pct Iron Major 1983
  • Type In-situ
    Estimate year 1985
    Total resources 7000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 60 wt-pct Iron Major 1985
  • Type In-situ
    Estimate year 1961
    Total resources 7012000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 62.2 wt-pct Iron Major 1961

Comments on the reserve resource information

  • ITEM 1: MEASURED RESERVES.
  • ITEM 1: PROVEN RESERVES. ITEM 2: PROBABLE RESERVES. ITEM 3: POSSIBLE RESERVES.

Comments on development

  • OVER 10 MILLION TONS WERE EXPECTED BY CUBAN MINERS DURING THE EARLY 1900'S.CURRENTLY (1985) INACTIVE.

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

    LONG, JR. 1956. MAGNETOMETER SURVEY AND GEOLOGIC EXAMINATION OF THE EL VOLCAN IRON DEPOSIT, SONORA, MEXICO,INT.REP. A.R.C. LABORATORIES, 8 P.

  • Deposit

    SALAS, G.P., 1975, CARTA Y PROVINCIAS METALOGENETICAS DE LA REPUBLICA MEXICANA: CONSEJO DE RECURSOS MINERALES PUBLICACION 21 E, P. 188.

  • Deposit

    GOMEZ R., D., 1961, INVENTARIO DE LOS YACIMIENTOS FERRIFEROS DE MEXICO: CONSEJO DE RECURSOS NATURALES NO RENOVABLES PUBLICACION 3 E, (SONORA LOC. 2).

  • Deposit

    DUTTON, C.E., 1955, IRON ORE DEPOSITS OF NORTH AMERICA AND THE WEST INDIES IN SURVEY OF WORLD IRON ORE RESOURCES; OCCURRENCE, APPRAISAL AND USE: NEW YORK, UNITED NATIONS, P. 179-208. IN THE SOUTHERN CORDILLERA: ARIZONA GEOLOGICAL SOCIETY DIGEST, V. 14, P. 237-262.

  • Deposit

    CABRERA F., F.J., VEGA G., E.L., AND PEREZ S., E., 1983, LOS RECURSOS MINERALES DE FIERRO EN SONORA, EVALUACION GEOLOGICA REGIONAL: GOBIERNO DEL ESTADO DE SONORA, DIRECCION DE MINERIA, GEOLOGIA, Y ENERGETICOS, PUBLICACION NO. 5, 64 P.

  • Production

    LONG, 1956

  • Reserve-Resource

    CABRERA, ET.AL., 1983, TABLE VI; PEREZ SEGURA, 1985.

General comments

Subject category Comment text
Deposit FE IS CONCENTRATED IN SUBAERIAL VOLCANIC ROCKS. FE- EPITHERMAL VEINS. THE DEPOSIT STRUCTURAL DIRECTION IS 200M LONG AND 20M WIDE (WIDEST SPOT). 80% OF THE MINERALIZATION IS MAGNETITE THAT HAS BEEN HIGHLY ALTERED TO HEMATITE. OTHER MINERALS INCLUDE APATITE (VERY HIGH PHOSPHOROUS), PYRITE, CHALCOPYRITE, POTASSIUM FELDSPAR, AND BIOTITE.
Deposit APPARENTLY MISCLASSIFIED IN COX AND SINGER (1986) AS FE SKARN DEPOSIT. ; INFO.SRC : 1 PUB

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Staude, John-Mark G. (Page, Norman J.) U.S. Geological Survey
Updater 01-JUN-1988 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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