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Ocampo

Past Producer in Chihuahua, Mexico with commodities Silver, Gold, Lead, Zinc, Copper
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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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Production statistics
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10049490
MRDS ID MX02207
Record type Site
Current site name Ocampo
Related records 10230344

Geographic coordinates

Geographic coordinates: -108.37559, 28.21275 (WGS84)
Location accuracy 500(meters)
Relative position A25 KM SW OF CONCHENO. 14.5 KM E OF SANTA MARIA MINE

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Chihuahua

Comments on the location information

  • AT LEAST 3 SEPARATE MINES IN AREA. 1 KM SW OF THE TOWN OF OCAMPO VIA JEEP ROAD.

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Tertiary
Zinc Critical Tertiary
Copper Tertiary

Comments on the commodity information

  • COMBINED PB+ZN+CU CONTENT: 0.03%

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Electrum Ore
Galena Ore
Gold Ore
Stephanite Ore
Tetrahedrite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Propylitic, Argillic, Phyllic, Silicic

Analytical data

Result 0.25 OZ/TON AU, 9.5 OZ/TON AG, AU:AG RATIO - 1:60, (BUCHANAN, 1981).

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Stratigraphic age (youngest) Eocene
  • 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
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -108.37559, 28.21275
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Eastern Limb Of Broad Nw Trending Anticline.

Ore body information

  • Strike NW & NE
    Dip STEEP SW
    Thickness 10M
    Length 4000M
    Width 2500M
    Depth to bottom 600M

Controls for ore emplacement

  • Veins In Shear Zone

Comments on the geologic information

  • TWO SECTIONS OF LOWER TERTIARY VOLCANIC ROCKS. LOWER UNITS COMPOSED OF NE-DIPPING RHYOLITE TUFFS AND FLOWS, OVERLAIN BY SEVERAL FLOWS AND AGGLOMERATES OF ANDESITE LOCALLY INTERCALATED WITH QUARTZ-RICH VOLCANIC ARENITE. UPPER VOLCANIC SERIES CONSISTS OF RHYOLITE AND ANDESITE FLOWS UNCONFORMABLY OVERLAIN BY MID-TERTIARY ASH FLOW TUFFS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1804

Mining district

District name /Ocampo

Production statistics

  • Year 1981
    Period -1981
    Material ORE AU AG
    Accuracy Estimate
    Description Cp_Grade: ^0.25 Oz Au, 9.5 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 268g/mt
    Minor Ore Gold Gold 7g/mt

Comments on the workings information

  • PROBLEMS WITH WATER IN WORKINGS.

Reference information

Bibliographic references

  • Deposit

    SALAS, G.P., 1975, CARTA Y PROVINCIAS METALOGENETICAS DE LA REPUBLICA MEXICANA: CONSEJO DE RECURSOS MINERALES PUBLICACION 21 E, P. 189.

  • Deposit

    GONZALEZ R., J., 1956, MEMORIA GEOLOGICO-MINERA DEL ESTADO DE CHIHUAHUA: CONGRESO GEOLOGICO INTERNACIONAL, XX, DURANGO, MEXICO, 1956, P. 74-76.

  • Deposit

    KNOWLING, R.D., 1976, GEOLOGY AND MINERALIZATION OF THE OCAMPO DISTRICT, CHIHUAHUA, MEXICO (ABS.): GSA ABSTRACTS WITH PROGRAMS, V. 8, NO. 5, P. 595-596.

  • Deposit

    BUCHANAN, L.J., 1981, PRECIOUS METAL DEPOSITS ASSOCIATED WITH VOLCANIC ENVIRONMENTS IN THE SOUTHWEST IN DICKINSON, W.R., AND PAYNE, W.D., (EDS.), 1981, RELATIONS OF TECTONICS TO ORE DEPOSITS IN THE SOUTHERN CORDILLERA: ARIZONA GEOLOGICAL SOCIETY DIGEST, V. 14, P. 237-262.

  • Deposit

    BOCKOVEN, N.T., 1981, GEOLOGY OF THE YECORA-OCAMPO AREA, SONORA AND CHIHUAHUA, MEXICO AND CHEMICAL VARIATIONS IN VOLCANIC ROCKS ACROSS THE NORTHERN SIERRA MADRE OCCIDENTAL: GSA ABSTRACTS WITH PROGRAMS, V. 13, NO. 2, P. 46.

  • Deposit

    SOCIEDAD GEOLOGICA MEXICANA A.C., 1985, PLANO GEOLOGICO MINERO DE CHIHUAHUA, MEXICO: CONSEJO DE RECURSOS MINERALES AND FEDERAL GOVERNMENT OF MEXICO, MEXICO D.F., 1 SHEET, SCALE 1:500,000.

  • Deposit

    SECRETARIO DE PROGRAMACION Y PREPUESTO, 1984, TECORIPA: CARTA GEOLOGICA; INSTITUTO NACIONAL DE ESTADISTICA GEOGRAFIA E INFORMACION, MEXICO D.F., SCALE 1:250,000.

  • Deposit

    SECRETARIO DE PROGRAMACION Y PREPUESTO, 1982, MONS (H12D88) TOPOGRAPHIC QUADRANGLE; INSTITUTO NACIONAL DE ESTADISTICA GEOGRAFIA E INFORMACION, MEXICO D.F., SCALE 1:50,000.

  • Deposit

    WISSER, E., 1966 THE PRECIUOS METAL PROVINCE

  • Deposit

    LINTON, ROBERT, 1912,

  • Production

    BUCHANAN, 1981.

General comments

Subject category Comment text
Deposit BASE METALS EARLIER THAN PRECIOUS METALS. ORE IS POST-DACITE STOCK EMPLACEMENT. STRUCTURE, ROCK-TYPE DISTRIBUTION, MINERALIZING PATTERNS, AND K/AR DATING INDICATE 40-50 KM DIAMETER CALDERA CENTERED AROUND OCAMPO. ONE OF THE MINES IN THIS AREA IS LOCATED AT 28-11N, 108-22-15W. ; INFO.SRC : 1 PUB
Deposit STEEPLY DIPPING QUARTZ VEINS UP TO 10-12 M WIDE IN SHEAR ZONES ALONG MAJOR NW STRIKING FAULTS. MAJOR PRODUCING ZONE (W SIDE OF ARROYO OCAMPO) IS 2.5 KM WIDE AND 4 KM LONG. MINOR NE STRIKING FISSURE-VEIN TREND IN THE N PART OF THE AREA. VERTICAL EXTENT OF ORE BODIES IS AT LEAST 600 M. ORE MINERALS: ARGENTITE + SMALLER AMOUNTS OF GOLD. MINOR BASE METAL SULFIDES OCCUR DISTALLY AND IN ANDESITE-QUARTZ BRECCIA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-88 Leonard, Kenneth R. (Page, Norman J.) U.S. Geological Survey
Updater 01-APR-88 Leonard, Kenneth R. U.S. Geological Survey
Updater 01-FEB-91 Staude, John-Mark G. U.S. Geological Survey
Updater 01-AUG-91 Kibbe, R.D. U.S. Geological Survey

Beyond USGS

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

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